15213012456 has 16 divisors (see below), whose sum is σ = 38032531200. Its totient is φ = 5071004144.

The previous prime is 15213012449. The next prime is 15213012491. The reversal of 15213012456 is 65421031251.

It is a super-2 number, since 2×15213012456² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316937736 + ... + 316937783.

It is an arithmetic number, because the mean of its divisors is an integer number (2377033200).

Almost surely, 2^15213012456 is an apocalyptic number.

It is an amenable number.

15213012456 is an abundant number, since it is smaller than the sum of its proper divisors (22819518744).

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

15213012456 is a wasteful number, since it uses less digits than its factorization.

15213012456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633875528 (or 633875524 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 15213012456 in words is "fifteen billion, two hundred thirteen million, twelve thousand, four hundred fifty-six".