22512217664 has 14 divisors (see below), whose sum is σ = 44672682054. Its totient is φ = 11256108800.

The previous prime is 22512217631. The next prime is 22512217667. The reversal of 22512217664 is 46671221522.

It can be written as a sum of positive squares in only one way, i.e., 19939699264 + 2572518400 = 141208^2 + 50720^2 .

It is not an unprimeable number, because it can be changed into a prime (22512217667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175876637 + ... + 175876764.

It is an arithmetic number, because the mean of its divisors is an integer number (3190905861).

Almost surely, 2^22512217664 is an apocalyptic number.

It is an amenable number.

22512217664 is a deficient number, since it is larger than the sum of its proper divisors (22160464390).

22512217664 is an equidigital number, since it uses as much as digits as its factorization.

22512217664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351753413 (or 351753403 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The spelling of 22512217664 in words is "twenty-two billion, five hundred twelve million, two hundred seventeen thousand, six hundred sixty-four".