12664353572 has 24 divisors (see below), whose sum is σ = 23955533952. Its totient is φ = 5823511200.

The previous prime is 12664353547. The next prime is 12664353577. The reversal of 12664353572 is 27535346621.

It is not an unprimeable number, because it can be changed into a prime (12664353577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435254 + ... + 463437.

It is an arithmetic number, because the mean of its divisors is an integer number (998147248).

Almost surely, 2^12664353572 is an apocalyptic number.

It is an amenable number.

12664353572 is a deficient number, since it is larger than the sum of its proper divisors (11291180380).

12664353572 is a wasteful number, since it uses less digits than its factorization.

12664353572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898979 (or 898977 counting only the distinct ones).

The product of its digits is 907200, while the sum is 44.

The spelling of 12664353572 in words is "twelve billion, six hundred sixty-four million, three hundred fifty-three thousand, five hundred seventy-two".