15765136412 has 12 divisors (see below), whose sum is σ = 28109536056. Its totient is φ = 7733840400.

The previous prime is 15765136391. The next prime is 15765136423. The reversal of 15765136412 is 21463156751.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15765136412.

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, 37181714 + ... + 37182137.

It is an arithmetic number, because the mean of its divisors is an integer number (2342461338).

Almost surely, 2^15765136412 is an apocalyptic number.

It is an amenable number.

15765136412 is a deficient number, since it is larger than the sum of its proper divisors (12344399644).

15765136412 is a wasteful number, since it uses less digits than its factorization.

15765136412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74363908 (or 74363906 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The spelling of 15765136412 in words is "fifteen billion, seven hundred sixty-five million, one hundred thirty-six thousand, four hundred twelve".