12442537564 has 12 divisors (see below), whose sum is σ = 21775642000. Its totient is φ = 6220925568.

The previous prime is 12442537529. The next prime is 12442537567. The reversal of 12442537564 is 46573524421.

It is a hoax number, since the sum of its digits (43) 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 12442537564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442537567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6892 + ... + 157900.

Almost surely, 2^12442537564 is an apocalyptic number.

It is an amenable number.

12442537564 is a deficient number, since it is larger than the sum of its proper divisors (9333104436).

12442537564 is a wasteful number, since it uses less digits than its factorization.

12442537564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171612 (or 171610 counting only the distinct ones).

The product of its digits is 806400, while the sum is 43.

The spelling of 12442537564 in words is "twelve billion, four hundred forty-two million, five hundred thirty-seven thousand, five hundred sixty-four".