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13091854944 = 25371271311171
BaseRepresentation
bin11000011000101010…
…11101101001100000
31020210101122010202110
430030111131221200
5203303003324234
610003031515320
7642266634210
oct141425355140
936711563673
1013091854944
115609013433
122654528b40
13130842303c
148c2a3a240
155195481e9
hex30c55da60

13091854944 has 192 divisors, whose sum is σ = 39921057792. Its totient is φ = 3679603200.

The previous prime is 13091854939. The next prime is 13091854961. The reversal of 13091854944 is 44945819031.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13091854893 and 13091854902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11179479 + ... + 11180649.

It is an arithmetic number, because the mean of its divisors is an integer number (207922176).

Almost surely, 213091854944 is an apocalyptic number.

13091854944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13091854944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19960528896).

13091854944 is an abundant number, since it is smaller than the sum of its proper divisors (26829202848).

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

13091854944 is a wasteful number, since it uses less digits than its factorization.

13091854944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 13091854944 in words is "thirteen billion, ninety-one million, eight hundred fifty-four thousand, nine hundred forty-four".