129239036402736 has 40 divisors (see below), whose sum is σ = 359549626917040. Its totient is φ = 39765857354496.

The previous prime is 129239036402699. The next prime is 129239036402807. The reversal of 129239036402736 is 637204630932921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103556919571 + ... + 103556920818.

It is an arithmetic number, because the mean of its divisors is an integer number (8988740672926).

Almost surely, 2^{129239036402736} is an apocalyptic number.

129239036402736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129239036402736 is an abundant number, since it is smaller than the sum of its proper divisors (230310590514304).

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

129239036402736 is a wasteful number, since it uses less digits than its factorization.

129239036402736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207113840413 (or 207113840407 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 57.

The spelling of 129239036402736 in words is "one hundred twenty-nine trillion, two hundred thirty-nine billion, thirty-six million, four hundred two thousand, seven hundred thirty-six".