128204765248 has 56 divisors (see below), whose sum is σ = 291497918400. Its totient is φ = 54803578368.

The previous prime is 128204765239. The next prime is 128204765251. The reversal of 128204765248 is 842567402821.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193558 + ... + 542101.

Almost surely, 2^128204765248 is an apocalyptic number.

It is an amenable number.

128204765248 is an abundant number, since it is smaller than the sum of its proper divisors (163293153152).

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

128204765248 is an equidigital number, since it uses as much as digits as its factorization.

128204765248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736067 (or 736057 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 49.

The spelling of 128204765248 in words is "one hundred twenty-eight billion, two hundred four million, seven hundred sixty-five thousand, two hundred forty-eight".