128862278688 has 96 divisors (see below), whose sum is σ = 397400496192. Its totient is φ = 36045388800.

The previous prime is 128862278681. The next prime is 128862278711. The reversal of 128862278688 is 886872268821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (128862278681) 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, 4679683 + ... + 4707138.

It is an arithmetic number, because the mean of its divisors is an integer number (4139588502).

Almost surely, 2^128862278688 is an apocalyptic number.

It is an amenable number.

128862278688 is an abundant number, since it is smaller than the sum of its proper divisors (268538217504).

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

128862278688 is a wasteful number, since it uses less digits than its factorization.

128862278688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9386858 (or 9386850 counting only the distinct ones).

The product of its digits is 66060288, while the sum is 66.

The spelling of 128862278688 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, two hundred seventy-eight thousand, six hundred eighty-eight".