128590879434 has 8 divisors (see below), whose sum is σ = 257181758880. Its totient is φ = 42863626476.

The previous prime is 128590879427. The next prime is 128590879517. The reversal of 128590879434 is 434978095821.

It is a sphenic number, since it is the product of 3 distinct primes.

128590879434 is an admirable number.

It is a super-2 number, since 2×128590879434² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10715906614 + ... + 10715906625.

It is an arithmetic number, because the mean of its divisors is an integer number (32147719860).

Almost surely, 2^128590879434 is an apocalyptic number.

128590879434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128590879434 is a wasteful number, since it uses less digits than its factorization.

128590879434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431813244.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 128590879434 in words is "one hundred twenty-eight billion, five hundred ninety million, eight hundred seventy-nine thousand, four hundred thirty-four".