15865728652 has 12 divisors (see below), whose sum is σ = 29398262040. Its totient is φ = 7466225216.

The previous prime is 15865728643. The next prime is 15865728679. The reversal of 15865728652 is 25682756851.

It is a junction number, because it is equal to n+sod(n) for n = 15865728593 and 15865728602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116659702 + ... + 116659837.

It is an arithmetic number, because the mean of its divisors is an integer number (2449855170).

Almost surely, 2^15865728652 is an apocalyptic number.

It is an amenable number.

15865728652 is a deficient number, since it is larger than the sum of its proper divisors (13532533388).

15865728652 is a wasteful number, since it uses less digits than its factorization.

15865728652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233319560 (or 233319558 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 55.

The spelling of 15865728652 in words is "fifteen billion, eight hundred sixty-five million, seven hundred twenty-eight thousand, six hundred fifty-two".