428064676656 has 80 divisors (see below), whose sum is σ = 1169119219200. Its totient is φ = 134587954944.

The previous prime is 428064676621. The next prime is 428064676661. The reversal of 428064676656 is 656676460824.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 428064676656.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815976 + ... + 1233671.

It is an arithmetic number, because the mean of its divisors is an integer number (14613990240).

Almost surely, 2^428064676656 is an apocalyptic number.

It is an amenable number.

428064676656 is an abundant number, since it is smaller than the sum of its proper divisors (741054542544).

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

428064676656 is a wasteful number, since it uses less digits than its factorization.

428064676656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049906 (or 2049900 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 60.

The spelling of 428064676656 in words is "four hundred twenty-eight billion, sixty-four million, six hundred seventy-six thousand, six hundred fifty-six".