128977901799 has 16 divisors (see below), whose sum is σ = 181709932800. Its totient is φ = 81149985216.

The previous prime is 128977901779. The next prime is 128977901821. The reversal of 128977901799 is 997109779821.

It is not a de Polignac number, because 128977901799 - 2⁷ = 128977901671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128977901779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4286854 + ... + 4316835.

It is an arithmetic number, because the mean of its divisors is an integer number (11356870800).

Almost surely, 2^128977901799 is an apocalyptic number.

128977901799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128977901799 is a deficient number, since it is larger than the sum of its proper divisors (52732031001).

128977901799 is a wasteful number, since it uses less digits than its factorization.

128977901799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603974.

The product of its (nonzero) digits is 36006768, while the sum is 69.

The spelling of 128977901799 in words is "one hundred twenty-eight billion, nine hundred seventy-seven million, nine hundred one thousand, seven hundred ninety-nine".