15305642972 has 24 divisors (see below), whose sum is σ = 26927973072. Its totient is φ = 7612012800.

The previous prime is 15305642959. The next prime is 15305642981. The reversal of 15305642972 is 27924650351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842222 + ... + 860202.

It is an arithmetic number, because the mean of its divisors is an integer number (1121998878).

Almost surely, 2^15305642972 is an apocalyptic number.

It is an amenable number.

15305642972 is a deficient number, since it is larger than the sum of its proper divisors (11622330100).

15305642972 is a wasteful number, since it uses less digits than its factorization.

15305642972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19109 (or 19107 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 15305642972 in words is "fifteen billion, three hundred five million, six hundred forty-two thousand, nine hundred seventy-two".