15115432456 has 16 divisors (see below), whose sum is σ = 28344079440. Its totient is φ = 7557011280.

The previous prime is 15115432441. The next prime is 15115432477. The reversal of 15115432456 is 65423451151.

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, 9351 + ... + 174121.

It is an arithmetic number, because the mean of its divisors is an integer number (1771504965).

Almost surely, 2^15115432456 is an apocalyptic number.

It is an amenable number.

15115432456 is a deficient number, since it is larger than the sum of its proper divisors (13228646984).

15115432456 is a wasteful number, since it uses less digits than its factorization.

15115432456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176244 (or 176240 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The spelling of 15115432456 in words is "fifteen billion, one hundred fifteen million, four hundred thirty-two thousand, four hundred fifty-six".