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13551084768 = 2531312019041
BaseRepresentation
bin11001001111011010…
…10010010011100000
31021222101202102122110
430213231102103200
5210223034203033
610120354435320
7656544214524
oct144755222340
937871672573
1013551084768
115824263611
122762292b40
13137c601b70
14927a1bd84
15544a0b363
hex327b524e0

13551084768 has 96 divisors (see below), whose sum is σ = 38344011552. Its totient is φ = 4165632000.

The previous prime is 13551084763. The next prime is 13551084773. The reversal of 13551084768 is 86748015531.

It is an interprime number because it is at equal distance from previous prime (13551084763) and next prime (13551084773).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×135510847682 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551084763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494328 + ... + 1503368.

It is an arithmetic number, because the mean of its divisors is an integer number (399416787).

Almost surely, 213551084768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13551084768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19172005776).

13551084768 is an abundant number, since it is smaller than the sum of its proper divisors (24792926784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13551084768 is a wasteful number, since it uses less digits than its factorization.

13551084768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268 (or 10260 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 13551084768 in words is "thirteen billion, five hundred fifty-one million, eighty-four thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1201 1248 2402 3603 4804 7206 9041 9608 14412 15613 18082 19216 27123 28824 31226 36164 38432 46839 54246 57648 62452 72328 93678 108492 115296 117533 124904 144656 187356 216984 235066 249808 289312 352599 374712 433968 470132 499616 705198 749424 867936 940264 1410396 1498848 1880528 2820792 3761056 5641584 10858241 11283168 21716482 32574723 43432964 65149446 86865928 130298892 141157133 173731856 260597784 282314266 347463712 423471399 521195568 564628532 846942798 1042391136 1129257064 1693885596 2258514128 3387771192 4517028256 6775542384 13551084768