128759122798 has 4 divisors (see below), whose sum is σ = 193138684200. Its totient is φ = 64379561398.

The previous prime is 128759122747. The next prime is 128759122819. The reversal of 128759122798 is 897221957821.

It is a semiprime because it is the product of two primes.

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, 32189780698 + ... + 32189780701.

It is an arithmetic number, because the mean of its divisors is an integer number (48284671050).

Almost surely, 2^128759122798 is an apocalyptic number.

128759122798 is a deficient number, since it is larger than the sum of its proper divisors (64379561402).

128759122798 is an equidigital number, since it uses as much as digits as its factorization.

128759122798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64379561401.

The product of its digits is 10160640, while the sum is 61.

The spelling of 128759122798 in words is "one hundred twenty-eight billion, seven hundred fifty-nine million, one hundred twenty-two thousand, seven hundred ninety-eight".