129871365792 has 96 divisors (see below), whose sum is σ = 391021206912. Its totient is φ = 36972094464.

The previous prime is 129871365773. The next prime is 129871365809. The reversal of 129871365792 is 297563178921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162703 + ... + 534990.

It is an arithmetic number, because the mean of its divisors is an integer number (4073137572).

Almost surely, 2^129871365792 is an apocalyptic number.

129871365792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129871365792 is an abundant number, since it is smaller than the sum of its proper divisors (261149841120).

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

129871365792 is a wasteful number, since it uses less digits than its factorization.

129871365792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697990 (or 697982 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 60.

The spelling of 129871365792 in words is "one hundred twenty-nine billion, eight hundred seventy-one million, three hundred sixty-five thousand, seven hundred ninety-two".