12664444508 has 96 divisors (see below), whose sum is σ = 25001786880. Its totient is φ = 5583790080.

The previous prime is 12664444501. The next prime is 12664444511. The reversal of 12664444508 is 80544446621.

It is a happy number.

It is a super-2 number, since 2×12664444508² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664444501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30964208 + ... + 30964616.

It is an arithmetic number, because the mean of its divisors is an integer number (260435280).

Almost surely, 2^12664444508 is an apocalyptic number.

It is an amenable number.

12664444508 is a deficient number, since it is larger than the sum of its proper divisors (12337342372).

12664444508 is a wasteful number, since it uses less digits than its factorization.

12664444508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 44.

The spelling of 12664444508 in words is "twelve billion, six hundred sixty-four million, four hundred forty-four thousand, five hundred eight".