12638072670 has 16 divisors (see below), whose sum is σ = 30331374480. Its totient is φ = 3370152704.

The previous prime is 12638072651. The next prime is 12638072743. The reversal of 12638072670 is 7627083621.

It is a super-4 number, since 4×12638072670⁴ (a number of 42 digits) contains 4444 as substring.

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, 210634515 + ... + 210634574.

It is an arithmetic number, because the mean of its divisors is an integer number (1895710905).

Almost surely, 2^12638072670 is an apocalyptic number.

12638072670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638072670 is an abundant number, since it is smaller than the sum of its proper divisors (17693301810).

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

12638072670 is a wasteful number, since it uses less digits than its factorization.

12638072670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421269099.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 12638072670 in words is "twelve billion, six hundred thirty-eight million, seventy-two thousand, six hundred seventy".