128582813664 has 60 divisors (see below), whose sum is σ = 378158490864. Its totient is φ = 42860937024.

The previous prime is 128582813659. The next prime is 128582813677. The reversal of 128582813664 is 466318285821.

128582813664 is a `hidden beast` number, since 1 + 28 + 582 + 8 + 1 + 36 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 128582813664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24801192 + ... + 24806375.

Almost surely, 2^128582813664 is an apocalyptic number.

It is an amenable number.

128582813664 is an abundant number, since it is smaller than the sum of its proper divisors (249575677200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128582813664 is an equidigital number, since it uses as much as digits as its factorization.

128582813664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49607589 (or 49607572 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 128582813664 in words is "one hundred twenty-eight billion, five hundred eighty-two million, eight hundred thirteen thousand, six hundred sixty-four".