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13159231488 = 2123713113
BaseRepresentation
bin11000100000101100…
…11111000000000000
31020222002102020000000
430100112133000000
5203422230401423
610013440000000
7644045423244
oct142026370000
936862366000
1013159231488
115643052427
122673000000
131319383710
148cb978424
15520406843
hex31059f000

13159231488 has 416 divisors, whose sum is σ = 42878902080. Its totient is φ = 4013162496.

The previous prime is 13159231483. The next prime is 13159231499. The reversal of 13159231488 is 88413295131.

13159231488 is a `hidden beast` number, since 13 + 1 + 592 + 3 + 1 + 48 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (416).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13159231483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116453320 + ... + 116453432.

Almost surely, 213159231488 is an apocalyptic number.

13159231488 is a gapful number since it is divisible by the number (18) 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 13159231488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21439451040).

13159231488 is an abundant number, since it is smaller than the sum of its proper divisors (29719670592).

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

13159231488 is an frugal number, since it uses more digits than its factorization.

13159231488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 131 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 13159231488 in words is "thirteen billion, one hundred fifty-nine million, two hundred thirty-one thousand, four hundred eighty-eight".