128664266662 has 16 divisors (see below), whose sum is σ = 194160277584. Its totient is φ = 63944532000.

The previous prime is 128664266657. The next prime is 128664266701. The reversal of 128664266662 is 266662466821.

It is a congruent number.

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, 639612 + ... + 816352.

It is an arithmetic number, because the mean of its divisors is an integer number (12135017349).

Almost surely, 2^128664266662 is an apocalyptic number.

128664266662 is a deficient number, since it is larger than the sum of its proper divisors (65496010922).

128664266662 is a wasteful number, since it uses less digits than its factorization.

128664266662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178935.

The product of its digits is 11943936, while the sum is 55.

The spelling of 128664266662 in words is "one hundred twenty-eight billion, six hundred sixty-four million, two hundred sixty-six thousand, six hundred sixty-two".