15513406656 has 56 divisors (see below), whose sum is σ = 44777338944. Its totient is φ = 4701031680.

The previous prime is 15513406637. The next prime is 15513406757. The reversal of 15513406656 is 65660431551.

15513406656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670570 + ... + 3674793.

Almost surely, 2^15513406656 is an apocalyptic number.

15513406656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15513406656 is an abundant number, since it is smaller than the sum of its proper divisors (29263932288).

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

15513406656 is a wasteful number, since it uses less digits than its factorization.

15513406656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345389 (or 7345379 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 15513406656 in words is "fifteen billion, five hundred thirteen million, four hundred six thousand, six hundred fifty-six".