128640914075 has 48 divisors (see below), whose sum is σ = 171815907840. Its totient is φ = 95236560000.

The previous prime is 128640914069. The next prime is 128640914089. The reversal of 128640914075 is 570419046821.

It is a happy number.

It is not a de Polignac number, because 128640914075 - 2³² = 124345946779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12072500 + ... + 12083150.

It is an arithmetic number, because the mean of its divisors is an integer number (3579498080).

Almost surely, 2^128640914075 is an apocalyptic number.

128640914075 is a deficient number, since it is larger than the sum of its proper divisors (43174993765).

128640914075 is a wasteful number, since it uses less digits than its factorization.

128640914075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268 (or 11263 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 128640914075 in words is "one hundred twenty-eight billion, six hundred forty million, nine hundred fourteen thousand, seventy-five".