12639269660 has 24 divisors (see below), whose sum is σ = 26544895776. Its totient is φ = 5055245120.

The previous prime is 12639269641. The next prime is 12639269707. The reversal of 12639269660 is 6696293621.

It is a super-2 number, since 2×12639269660² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12639269599 and 12639269608.

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, 270809 + ... + 314031.

It is an arithmetic number, because the mean of its divisors is an integer number (1106037324).

Almost surely, 2^12639269660 is an apocalyptic number.

12639269660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12639269660 is an abundant number, since it is smaller than the sum of its proper divisors (13905626116).

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

12639269660 is a wasteful number, since it uses less digits than its factorization.

12639269660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57853 (or 57851 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 12639269660 in words is "twelve billion, six hundred thirty-nine million, two hundred sixty-nine thousand, six hundred sixty".