129139308664 has 16 divisors (see below), whose sum is σ = 242161365600. Its totient is φ = 64562944512.

The previous prime is 129139308629. The next prime is 129139308709. The reversal of 129139308664 is 466803931921.

It is a happy number.

It is a super-2 number, since 2×129139308664² (a number of 23 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 in 3 ways as a sum of consecutive naturals, for example, 756457 + ... + 911320.

It is an arithmetic number, because the mean of its divisors is an integer number (15135085350).

Almost surely, 2^129139308664 is an apocalyptic number.

It is an amenable number.

129139308664 is a deficient number, since it is larger than the sum of its proper divisors (113022056936).

129139308664 is a wasteful number, since it uses less digits than its factorization.

129139308664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677462 (or 1677458 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 129139308664 in words is "one hundred twenty-nine billion, one hundred thirty-nine million, three hundred eight thousand, six hundred sixty-four".