12292872638 has 4 divisors (see below), whose sum is σ = 18439308960. Its totient is φ = 6146436318.

The previous prime is 12292872619. The next prime is 12292872667. The reversal of 12292872638 is 83627829221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12292872638² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3073218158 + ... + 3073218161.

It is an arithmetic number, because the mean of its divisors is an integer number (4609827240).

Almost surely, 2^12292872638 is an apocalyptic number.

12292872638 is a deficient number, since it is larger than the sum of its proper divisors (6146436322).

12292872638 is an equidigital number, since it uses as much as digits as its factorization.

12292872638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146436321.

The product of its digits is 1161216, while the sum is 50.

The spelling of 12292872638 in words is "twelve billion, two hundred ninety-two million, eight hundred seventy-two thousand, six hundred thirty-eight".