128798654995 has 16 divisors (see below), whose sum is σ = 157062372768. Its totient is φ = 101373465600.

The previous prime is 128798654857. The next prime is 128798655017. The reversal of 128798654995 is 599456897821.

It is a de Polignac number, because none of the positive numbers 2^k-128798654995 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25795 + ... + 508195.

It is an arithmetic number, because the mean of its divisors is an integer number (9816398298).

Almost surely, 2^128798654995 is an apocalyptic number.

128798654995 is a deficient number, since it is larger than the sum of its proper divisors (28263717773).

128798654995 is an equidigital number, since it uses as much as digits as its factorization.

128798654995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483270.

The product of its digits is 391910400, while the sum is 73.

The spelling of 128798654995 in words is "one hundred twenty-eight billion, seven hundred ninety-eight million, six hundred fifty-four thousand, nine hundred ninety-five".