15272878656 has 56 divisors (see below), whose sum is σ = 46182280000. Its totient is φ = 4363679232.

The previous prime is 15272878651. The next prime is 15272878667. The reversal of 15272878656 is 65687827251.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 15272878596 and 15272878605.

It is not an unprimeable number, because it can be changed into a prime (15272878651) 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, 5680531 + ... + 5683218.

Almost surely, 2^15272878656 is an apocalyptic number.

15272878656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15272878656 is an abundant number, since it is smaller than the sum of its proper divisors (30909401344).

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

15272878656 is a wasteful number, since it uses less digits than its factorization.

15272878656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363771 (or 11363761 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 57.

The spelling of 15272878656 in words is "fifteen billion, two hundred seventy-two million, eight hundred seventy-eight thousand, six hundred fifty-six".