15038956856 has 32 divisors (see below), whose sum is σ = 35156004480. Its totient is φ = 5859333600.

The previous prime is 15038956853. The next prime is 15038956861. The reversal of 15038956856 is 65865983051.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15038956853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12206330 + ... + 12207561.

It is an arithmetic number, because the mean of its divisors is an integer number (1098625140).

Almost surely, 2^15038956856 is an apocalyptic number.

It is an amenable number.

15038956856 is an abundant number, since it is smaller than the sum of its proper divisors (20117047624).

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

15038956856 is a wasteful number, since it uses less digits than its factorization.

15038956856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24413915 (or 24413911 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 15038956856 in words is "fifteen billion, thirty-eight million, nine hundred fifty-six thousand, eight hundred fifty-six".