15129800064 has 48 divisors (see below), whose sum is σ = 43537579020. Its totient is φ = 5043266304.

The previous prime is 15129800057. The next prime is 15129800087. The reversal of 15129800064 is 46000892151.

15129800064 is a `hidden beast` number, since 1 + 512 + 9 + 80 + 0 + 0 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×15129800064² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6565602 + ... + 6567905.

Almost surely, 2^15129800064 is an apocalyptic number.

It is an amenable number.

15129800064 is an abundant number, since it is smaller than the sum of its proper divisors (28407778956).

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

15129800064 is a wasteful number, since it uses less digits than its factorization.

15129800064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133527 (or 13133512 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 15129800064 in words is "fifteen billion, one hundred twenty-nine million, eight hundred thousand, sixty-four".