128107443722 has 32 divisors (see below), whose sum is σ = 203201369280. Its totient is φ = 60404832000.

The previous prime is 128107443721. The next prime is 128107443743. The reversal of 128107443722 is 227344701821.

It is a self number, because there is not a number n which added to its sum of digits gives 128107443722.

It is not an unprimeable number, because it can be changed into a prime (128107443721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23050568 + ... + 23056124.

It is an arithmetic number, because the mean of its divisors is an integer number (6350042790).

Almost surely, 2^128107443722 is an apocalyptic number.

128107443722 is a deficient number, since it is larger than the sum of its proper divisors (75093925558).

128107443722 is a wasteful number, since it uses less digits than its factorization.

128107443722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8246.

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 128107443722 in words is "one hundred twenty-eight billion, one hundred seven million, four hundred forty-three thousand, seven hundred twenty-two".