12642038466 has 32 divisors (see below), whose sum is σ = 25469802240. Its totient is φ = 4183111296.

The previous prime is 12642038449. The next prime is 12642038467. The reversal of 12642038466 is 66483024621.

It is a super-2 number, since 2×12642038466² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12642038467) 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, 1057575 + ... + 1069461.

It is an arithmetic number, because the mean of its divisors is an integer number (795931320).

Almost surely, 2^12642038466 is an apocalyptic number.

12642038466 is an abundant number, since it is smaller than the sum of its proper divisors (12827763774).

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

12642038466 is a wasteful number, since it uses less digits than its factorization.

12642038466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13178.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 12642038466 in words is "twelve billion, six hundred forty-two million, thirty-eight thousand, four hundred sixty-six".