8428664860400 has 30 divisors (see below), whose sum is σ = 20249867328072. Its totient is φ = 3371465944000.

The previous prime is 8428664860379. The next prime is 8428664860417. The reversal of 8428664860400 is 40684668248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10535830676 + ... + 10535831475.

Almost surely, 2^{8428664860400} is an apocalyptic number.

8428664860400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8428664860400 is an abundant number, since it is smaller than the sum of its proper divisors (11821202467672).

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

8428664860400 is a wasteful number, since it uses less digits than its factorization.

8428664860400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071662169 (or 21071662158 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 56.

The spelling of 8428664860400 in words is "eight trillion, four hundred twenty-eight billion, six hundred sixty-four million, eight hundred sixty thousand, four hundred".