128775262664 has 16 divisors (see below), whose sum is σ = 244509993600. Its totient is φ = 63572597712.

The previous prime is 128775262621. The next prime is 128775262673. The reversal of 128775262664 is 466262577821.

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, 101878532 + ... + 101879795.

It is an arithmetic number, because the mean of its divisors is an integer number (15281874600).

Almost surely, 2^128775262664 is an apocalyptic number.

It is an amenable number.

128775262664 is a deficient number, since it is larger than the sum of its proper divisors (115734730936).

128775262664 is a wasteful number, since it uses less digits than its factorization.

128775262664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203758412 (or 203758408 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 56.

The spelling of 128775262664 in words is "one hundred twenty-eight billion, seven hundred seventy-five million, two hundred sixty-two thousand, six hundred sixty-four".