128322850868 has 12 divisors (see below), whose sum is σ = 232308609540. Its totient is φ = 61948962432.

The previous prime is 128322850841. The next prime is 128322850879. The reversal of 128322850868 is 868058223821.

It can be written as a sum of positive squares in 2 ways, for example, as 71341341604 + 56981509264 = 267098^2 + 238708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553115621 + ... + 553115852.

It is an arithmetic number, because the mean of its divisors is an integer number (19359050795).

Almost surely, 2^128322850868 is an apocalyptic number.

It is an amenable number.

128322850868 is a deficient number, since it is larger than the sum of its proper divisors (103985758672).

128322850868 is a wasteful number, since it uses less digits than its factorization.

128322850868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106231506 (or 1106231504 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 128322850868 in words is "one hundred twenty-eight billion, three hundred twenty-two million, eight hundred fifty thousand, eight hundred sixty-eight".