15564120604 has 12 divisors (see below), whose sum is σ = 27506887128. Its totient is φ = 7705010000.

The previous prime is 15564120553. The next prime is 15564120613. The reversal of 15564120604 is 40602146551.

It is a self number, because there is not a number n which added to its sum of digits gives 15564120604.

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, 19262122 + ... + 19262929.

It is an arithmetic number, because the mean of its divisors is an integer number (2292240594).

Almost surely, 2^15564120604 is an apocalyptic number.

It is an amenable number.

15564120604 is a deficient number, since it is larger than the sum of its proper divisors (11942766524).

15564120604 is a wasteful number, since it uses less digits than its factorization.

15564120604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38525156 (or 38525154 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 15564120604 in words is "fifteen billion, five hundred sixty-four million, one hundred twenty thousand, six hundred four".