15216751056 has 80 divisors (see below), whose sum is σ = 44174422656. Its totient is φ = 4478504448.

The previous prime is 15216751049. The next prime is 15216751057. The reversal of 15216751056 is 65015761251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216751057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515775 + ... + 544478.

Almost surely, 2^15216751056 is an apocalyptic number.

15216751056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15216751056 is an abundant number, since it is smaller than the sum of its proper divisors (28957671600).

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

15216751056 is a wasteful number, since it uses less digits than its factorization.

15216751056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060300 (or 1060294 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 15216751056 in words is "fifteen billion, two hundred sixteen million, seven hundred fifty-one thousand, fifty-six".