12669025644 has 84 divisors (see below), whose sum is σ = 36262985640. Its totient is φ = 3839088960.

The previous prime is 12669025631. The next prime is 12669025693. The reversal of 12669025644 is 44652096621.

12669025644 is a `hidden beast` number, since 1 + 26 + 69 + 0 + 2 + 564 + 4 = 666.

It is a super-2 number, since 2×12669025644² (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 12669025644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 165409 + ... + 229560.

It is an arithmetic number, because the mean of its divisors is an integer number (431702210).

Almost surely, 2^12669025644 is an apocalyptic number.

It is an amenable number.

12669025644 is an abundant number, since it is smaller than the sum of its proper divisors (23593959996).

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

12669025644 is a wasteful number, since it uses less digits than its factorization.

12669025644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395002 (or 394985 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 12669025644 in words is "twelve billion, six hundred sixty-nine million, twenty-five thousand, six hundred forty-four".