15217909472 has 24 divisors (see below), whose sum is σ = 29968507800. Its totient is φ = 7606859904.

The previous prime is 15217909439. The next prime is 15217909489. The reversal of 15217909472 is 27490971251.

It is a congruent number.

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, 56054 + ... + 183242.

It is an arithmetic number, because the mean of its divisors is an integer number (1248687825).

Almost surely, 2^15217909472 is an apocalyptic number.

It is an amenable number.

15217909472 is a deficient number, since it is larger than the sum of its proper divisors (14750598328).

15217909472 is a wasteful number, since it uses less digits than its factorization.

15217909472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130938 (or 130930 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 15217909472 in words is "fifteen billion, two hundred seventeen million, nine hundred nine thousand, four hundred seventy-two".