12642421464 has 32 divisors (see below), whose sum is σ = 35117838000. Its totient is φ = 4214140416.

The previous prime is 12642421459. The next prime is 12642421483. The reversal of 12642421464 is 46412424621.

12642421464 is a `hidden beast` number, since 1 + 2 + 642 + 4 + 2 + 1 + 4 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29264649 + ... + 29265080.

Almost surely, 2^12642421464 is an apocalyptic number.

It is an amenable number.

12642421464 is an abundant number, since it is smaller than the sum of its proper divisors (22475416536).

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

12642421464 is a wasteful number, since it uses less digits than its factorization.

12642421464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58529744 (or 58529734 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The spelling of 12642421464 in words is "twelve billion, six hundred forty-two million, four hundred twenty-one thousand, four hundred sixty-four".