129372982871 has 32 divisors (see below), whose sum is σ = 152240933376. Its totient is φ = 108633600000.

The previous prime is 129372982867. The next prime is 129372982883. The reversal of 129372982871 is 178289273921.

It is a cyclic number.

It is not a de Polignac number, because 129372982871 - 2² = 129372982867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129372982871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129372982801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2316071 + ... + 2371271.

It is an arithmetic number, because the mean of its divisors is an integer number (4757529168).

Almost surely, 2^129372982871 is an apocalyptic number.

129372982871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129372982871 is a deficient number, since it is larger than the sum of its proper divisors (22867950505).

129372982871 is a wasteful number, since it uses less digits than its factorization.

129372982871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55463.

The product of its digits is 6096384, while the sum is 59.

The spelling of 129372982871 in words is "one hundred twenty-nine billion, three hundred seventy-two million, nine hundred eighty-two thousand, eight hundred seventy-one".