128862308775 has 12 divisors (see below), whose sum is σ = 213052350632. Its totient is φ = 68726564640.

The previous prime is 128862308767. The next prime is 128862308777. The reversal of 128862308775 is 577803268821.

It is not a de Polignac number, because 128862308775 - 2³ = 128862308767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128862308777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 859081984 + ... + 859082133.

Almost surely, 2^128862308775 is an apocalyptic number.

128862308775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128862308775 is a deficient number, since it is larger than the sum of its proper divisors (84190041857).

128862308775 is a wasteful number, since it uses less digits than its factorization.

128862308775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718164130 (or 1718164125 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 128862308775 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, three hundred eight thousand, seven hundred seventy-five".