128761617424 has 20 divisors (see below), whose sum is σ = 272155237200. Its totient is φ = 58528007840.

The previous prime is 128761617409. The next prime is 128761617449. The reversal of 128761617424 is 424716167821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365799874 + ... + 365800225.

It is an arithmetic number, because the mean of its divisors is an integer number (13607761860).

Almost surely, 2^128761617424 is an apocalyptic number.

It is an amenable number.

128761617424 is an abundant number, since it is smaller than the sum of its proper divisors (143393619776).

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

128761617424 is a wasteful number, since it uses less digits than its factorization.

128761617424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731600118 (or 731600112 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The spelling of 128761617424 in words is "one hundred twenty-eight billion, seven hundred sixty-one million, six hundred seventeen thousand, four hundred twenty-four".