128516390104 has 8 divisors (see below), whose sum is σ = 240968231460. Its totient is φ = 64258195048.

The previous prime is 128516390063. The next prime is 128516390143. The reversal of 128516390104 is 401093615821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8032274374 + ... + 8032274389.

Almost surely, 2^128516390104 is an apocalyptic number.

It is an amenable number.

128516390104 is a deficient number, since it is larger than the sum of its proper divisors (112451841356).

128516390104 is a wasteful number, since it uses less digits than its factorization.

128516390104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16064548769 (or 16064548765 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 128516390104 in words is "one hundred twenty-eight billion, five hundred sixteen million, three hundred ninety thousand, one hundred four".