64224536664 has 16 divisors (see below), whose sum is σ = 160561341720. Its totient is φ = 21408178880.

The previous prime is 64224536639. The next prime is 64224536707. The reversal of 64224536664 is 46663542246.

It is a super-2 number, since 2×64224536664² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1338011157 + ... + 1338011204.

Almost surely, 2^64224536664 is an apocalyptic number.

It is an amenable number.

64224536664 is an abundant number, since it is smaller than the sum of its proper divisors (96336805056).

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

64224536664 is a wasteful number, since it uses less digits than its factorization.

64224536664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676022370 (or 2676022366 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 48.

The spelling of 64224536664 in words is "sixty-four billion, two hundred twenty-four million, five hundred thirty-six thousand, six hundred sixty-four".