128552365764 has 45 divisors (see below), whose sum is σ = 336078149407. Its totient is φ = 42848637336.

The previous prime is 128552365759. The next prime is 128552365789. The reversal of 128552365764 is 467563255821.

The square root of 128552365764 is 358542.

It is a perfect power (a square), and thus also a powerful number.

128552365764 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 523 + 6 + 57 + 64 = 666.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128552365764.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6443797 + ... + 6463715.

Almost surely, 2^128552365764 is an apocalyptic number.

128552365764 is the 358542-nd square number.

It is an amenable number.

128552365764 is an abundant number, since it is smaller than the sum of its proper divisors (207525783643).

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

128552365764 is an frugal number, since it uses more digits than its factorization.

128552365764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39854 (or 19924 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 128552365764 in words is "one hundred twenty-eight billion, five hundred fifty-two million, three hundred sixty-five thousand, seven hundred sixty-four".