10644406464 has 56 divisors (see below), whose sum is σ = 28296908608. Its totient is φ = 3531306240.

The previous prime is 10644406447. The next prime is 10644406477. The reversal of 10644406464 is 46460444601.

It is a super-2 number, since 2×10644406464² (a number of 21 digits) contains 22 as substring.

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, 90862 + ... + 171885.

Almost surely, 2^10644406464 is an apocalyptic number.

It is an amenable number.

10644406464 is an abundant number, since it is smaller than the sum of its proper divisors (17652502144).

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

10644406464 is a wasteful number, since it uses less digits than its factorization.

10644406464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262973 (or 262963 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 10644406464 in words is "ten billion, six hundred forty-four million, four hundred six thousand, four hundred sixty-four".