12556574650 has 24 divisors (see below), whose sum is σ = 24584453280. Its totient is φ = 4758280560.

The previous prime is 12556574633. The next prime is 12556574677. The reversal of 12556574650 is 5647565521.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12556574650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6607774 + ... + 6609673.

It is an arithmetic number, because the mean of its divisors is an integer number (1024352220).

Almost surely, 2^12556574650 is an apocalyptic number.

12556574650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12556574650 is a deficient number, since it is larger than the sum of its proper divisors (12027878630).

12556574650 is a wasteful number, since it uses less digits than its factorization.

12556574650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13217478 (or 13217473 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 12556574650 in words is "twelve billion, five hundred fifty-six million, five hundred seventy-four thousand, six hundred fifty".