22664144656 has 40 divisors (see below), whose sum is σ = 45179530200. Its totient is φ = 11007329280.

The previous prime is 22664144651. The next prime is 22664144693. The reversal of 22664144656 is 65644146622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 379626256 + 22284518400 = 19484^2 + 149280^2 .

It is not an unprimeable number, because it can be changed into a prime (22664144651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74790 + ... + 225658.

It is an arithmetic number, because the mean of its divisors is an integer number (1129488255).

Almost surely, 2^22664144656 is an apocalyptic number.

It is an amenable number.

22664144656 is a deficient number, since it is larger than the sum of its proper divisors (22515385544).

22664144656 is a wasteful number, since it uses less digits than its factorization.

22664144656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151147 (or 151141 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The spelling of 22664144656 in words is "twenty-two billion, six hundred sixty-four million, one hundred forty-four thousand, six hundred fifty-six".