15913317904 has 135 divisors (see below), whose sum is σ = 35203126413. Its totient is φ = 6963369600.

The previous prime is 15913317899. The next prime is 15913317907. The reversal of 15913317904 is 40971331951.

The square root of 15913317904 is 126148.

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

It can be written as a sum of positive squares in only one way, i.e., 517471504 + 15395846400 = 22748^2 + 124080^2 .

It is not an unprimeable number, because it can be changed into a prime (15913317907) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 260874034 + ... + 260874094.

Almost surely, 2^15913317904 is an apocalyptic number.

15913317904 is the 126148-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15913317904

15913317904 is an abundant number, since it is smaller than the sum of its proper divisors (19289808509).

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

15913317904 is an equidigital number, since it uses as much as digits as its factorization.

15913317904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 15913317904 in words is "fifteen billion, nine hundred thirteen million, three hundred seventeen thousand, nine hundred four".