15255108864 has 144 divisors (see below), whose sum is σ = 45786744640. Its totient is φ = 5008988160.

The previous prime is 15255108857. The next prime is 15255108881. The reversal of 15255108864 is 46880155251.

15255108864 is a `hidden beast` number, since 1 + 52 + 5 + 510 + 8 + 86 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446634 + ... + 479574.

Almost surely, 2^15255108864 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 15255108864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22893372320).

15255108864 is an abundant number, since it is smaller than the sum of its proper divisors (30531635776).

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

15255108864 is an equidigital number, since it uses as much as digits as its factorization.

15255108864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33033 (or 33013 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 15255108864 in words is "fifteen billion, two hundred fifty-five million, one hundred eight thousand, eight hundred sixty-four".