129987072982 has 24 divisors (see below), whose sum is σ = 211224324240. Its totient is φ = 59968041120.

The previous prime is 129987072961. The next prime is 129987072991. The reversal of 129987072982 is 289270789921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709119 + ... + 873397.

It is an arithmetic number, because the mean of its divisors is an integer number (8801013510).

Almost surely, 2^129987072982 is an apocalyptic number.

129987072982 is a deficient number, since it is larger than the sum of its proper divisors (81237251258).

129987072982 is a wasteful number, since it uses less digits than its factorization.

129987072982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166648 (or 166635 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 64.

The spelling of 129987072982 in words is "one hundred twenty-nine billion, nine hundred eighty-seven million, seventy-two thousand, nine hundred eighty-two".