64402860400 has 60 divisors (see below), whose sum is σ = 154752328600. Its totient is φ = 25757072640.

The previous prime is 64402860371. The next prime is 64402860419. The reversal of 64402860400 is 406820446.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4704766 + ... + 4718434.

Almost surely, 2^64402860400 is an apocalyptic number.

It is an amenable number.

64402860400 is an abundant number, since it is smaller than the sum of its proper divisors (90349468200).

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

64402860400 is a wasteful number, since it uses less digits than its factorization.

64402860400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25466 (or 25455 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 64402860400 in words is "sixty-four billion, four hundred two million, eight hundred sixty thousand, four hundred".