12639212106 has 64 divisors (see below), whose sum is σ = 26404963200. Its totient is φ = 4029747200.

The previous prime is 12639212087. The next prime is 12639212107. The reversal of 12639212106 is 60121293621.

It is a super-4 number, since 4×12639212106⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (12639212107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6690010 + ... + 6691898.

It is an arithmetic number, because the mean of its divisors is an integer number (412577550).

Almost surely, 2^12639212106 is an apocalyptic number.

12639212106 is an abundant number, since it is smaller than the sum of its proper divisors (13765751094).

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

12639212106 is a wasteful number, since it uses less digits than its factorization.

12639212106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 12639212106 in words is "twelve billion, six hundred thirty-nine million, two hundred twelve thousand, one hundred six".