12665385902 has 32 divisors (see below), whose sum is σ = 21668545920. Its totient is φ = 5503891680.

The previous prime is 12665385871. The next prime is 12665385977. The reversal of 12665385902 is 20958356621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877 + ... + 159167.

It is an arithmetic number, because the mean of its divisors is an integer number (677142060).

Almost surely, 2^12665385902 is an apocalyptic number.

12665385902 is a deficient number, since it is larger than the sum of its proper divisors (9003160018).

12665385902 is a wasteful number, since it uses less digits than its factorization.

12665385902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157488.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 12665385902 in words is "twelve billion, six hundred sixty-five million, three hundred eighty-five thousand, nine hundred two".