129975952796 has 24 divisors (see below), whose sum is σ = 230038567920. Its totient is φ = 64250806400.

The previous prime is 129975952753. The next prime is 129975952807. The reversal of 129975952796 is 697259579921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5192591 + ... + 5217561.

It is an arithmetic number, because the mean of its divisors is an integer number (9584940330).

Almost surely, 2^129975952796 is an apocalyptic number.

It is an amenable number.

129975952796 is a deficient number, since it is larger than the sum of its proper divisors (100062615124).

129975952796 is a wasteful number, since it uses less digits than its factorization.

129975952796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39685 (or 39683 counting only the distinct ones).

The product of its digits is 192893400, while the sum is 71.

The spelling of 129975952796 in words is "one hundred twenty-nine billion, nine hundred seventy-five million, nine hundred fifty-two thousand, seven hundred ninety-six".