129980087356 has 24 divisors (see below), whose sum is σ = 265265487200. Its totient is φ = 55705751136.

The previous prime is 129980087329. The next prime is 129980087359. The reversal of 129980087356 is 653780089921.

It is a self number, because there is not a number n which added to its sum of digits gives 129980087356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129980087359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47367465 + ... + 47370208.

Almost surely, 2^129980087356 is an apocalyptic number.

It is an amenable number.

129980087356 is an abundant number, since it is smaller than the sum of its proper divisors (135285399844).

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

129980087356 is an equidigital number, since it uses as much as digits as its factorization.

129980087356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94737698 (or 94737682 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 129980087356 in words is "one hundred twenty-nine billion, nine hundred eighty million, eighty-seven thousand, three hundred fifty-six".