12494973564 has 18 divisors (see below), whose sum is σ = 31584516600. Its totient is φ = 4164991176.

The previous prime is 12494973563. The next prime is 12494973571. The reversal of 12494973564 is 46537949421.

12494973564 is a `hidden beast` number, since 1 + 2 + 4 + 9 + 4 + 9 + 73 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12494973564² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12494973564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12494973563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173541264 + ... + 173541335.

Almost surely, 2^12494973564 is an apocalyptic number.

It is an amenable number.

12494973564 is an abundant number, since it is smaller than the sum of its proper divisors (19089543036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12494973564 is a wasteful number, since it uses less digits than its factorization.

12494973564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347082609 (or 347082604 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 12494973564 in words is "twelve billion, four hundred ninety-four million, nine hundred seventy-three thousand, five hundred sixty-four".