12642332432451 has 16 divisors (see below), whose sum is σ = 17160133461120. Its totient is φ = 8276676309440.

The previous prime is 12642332432447. The next prime is 12642332432489. The reversal of 12642332432451 is 15423423324621.

It is a cyclic number.

It is not a de Polignac number, because 12642332432451 - 2² = 12642332432447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12642332432551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37305405 + ... + 37642766.

It is an arithmetic number, because the mean of its divisors is an integer number (1072508341320).

Almost surely, 2^{12642332432451} is an apocalyptic number.

12642332432451 is a deficient number, since it is larger than the sum of its proper divisors (4517801028669).

12642332432451 is an equidigital number, since it uses as much as digits as its factorization.

12642332432451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74949186.

The product of its digits is 829440, while the sum is 42.

The spelling of 12642332432451 in words is "twelve trillion, six hundred forty-two billion, three hundred thirty-two million, four hundred thirty-two thousand, four hundred fifty-one".