129868079990 has 32 divisors (see below), whose sum is σ = 257879026080. Its totient is φ = 46694137600.

The previous prime is 129868079927. The next prime is 129868080007. The reversal of 129868079990 is 99970868921.

It is a self number, because there is not a number n which added to its sum of digits gives 129868079990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6622901 + ... + 6642480.

It is an arithmetic number, because the mean of its divisors is an integer number (8058719565).

Almost surely, 2^129868079990 is an apocalyptic number.

129868079990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129868079990 is a deficient number, since it is larger than the sum of its proper divisors (128010946090).

129868079990 is a wasteful number, since it uses less digits than its factorization.

129868079990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13265488.

The product of its (nonzero) digits is 35271936, while the sum is 68.

The spelling of 129868079990 in words is "one hundred twenty-nine billion, eight hundred sixty-eight million, seventy-nine thousand, nine hundred ninety".