12642451672 has 32 divisors (see below), whose sum is σ = 24713560080. Its totient is φ = 6057717120.

The previous prime is 12642451663. The next prime is 12642451687. The reversal of 12642451672 is 27615424621.

It is a happy number.

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, 328479 + ... + 364942.

Almost surely, 2^12642451672 is an apocalyptic number.

It is an amenable number.

12642451672 is a deficient number, since it is larger than the sum of its proper divisors (12071108408).

12642451672 is a wasteful number, since it uses less digits than its factorization.

12642451672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693523 (or 693519 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The spelling of 12642451672 in words is "twelve billion, six hundred forty-two million, four hundred fifty-one thousand, six hundred seventy-two".