15930478656 has 105 divisors (see below), whose sum is σ = 47249883021. Its totient is φ = 5307130368.

The previous prime is 15930478651. The next prime is 15930478703. The reversal of 15930478656 is 65687403951.

The square root of 15930478656 is 126216.

It is a perfect power (a square), and thus also a powerful number.

15930478656 is a `hidden beast` number, since 1 + 593 + 0 + 47 + 8 + 6 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 451137600 + 15479341056 = 21240^2 + 124416^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (15930478651) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9086676 + ... + 9088428.

Almost surely, 2^15930478656 is an apocalyptic number.

15930478656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15930478656 is the 126216-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15930478656

15930478656 is an abundant number, since it is smaller than the sum of its proper divisors (31319404365).

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

15930478656 is an frugal number, since it uses more digits than its factorization.

15930478656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 15930478656 in words is "fifteen billion, nine hundred thirty million, four hundred seventy-eight thousand, six hundred fifty-six".