22518039664 has 40 divisors (see below), whose sum is σ = 43785478800. Its totient is φ = 11218636800.

The previous prime is 22518039641. The next prime is 22518039703. The reversal of 22518039664 is 46693081522.

It is a super-2 number, since 2×22518039664² (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 7 ways as a sum of consecutive naturals, for example, 6758479 + ... + 6761809.

It is an arithmetic number, because the mean of its divisors is an integer number (1094636970).

Almost surely, 2^22518039664 is an apocalyptic number.

It is an amenable number.

22518039664 is a deficient number, since it is larger than the sum of its proper divisors (21267439136).

22518039664 is a wasteful number, since it uses less digits than its factorization.

22518039664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729 (or 4723 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 22518039664 in words is "twenty-two billion, five hundred eighteen million, thirty-nine thousand, six hundred sixty-four".