15216800056 has 16 divisors (see below), whose sum is σ = 28541905200. Its totient is φ = 7605625344.

The previous prime is 15216800033. The next prime is 15216800057. The reversal of 15216800056 is 65000861251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15216799994 and 15216800030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216800057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323436 + ... + 367483.

It is an arithmetic number, because the mean of its divisors is an integer number (1783869075).

Almost surely, 2^15216800056 is an apocalyptic number.

It is an amenable number.

15216800056 is a deficient number, since it is larger than the sum of its proper divisors (13325105144).

15216800056 is a wasteful number, since it uses less digits than its factorization.

15216800056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693678 (or 693674 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 15216800056 in words is "fifteen billion, two hundred sixteen million, eight hundred thousand, fifty-six".