22659956818 has 4 divisors (see below), whose sum is σ = 33989935230. Its totient is φ = 11329978408.

The previous prime is 22659956773. The next prime is 22659956849. The reversal of 22659956818 is 81865995622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22654163169 + 5793649 = 150513^2 + 2407^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5664989203 + ... + 5664989206.

Almost surely, 2^22659956818 is an apocalyptic number.

22659956818 is a deficient number, since it is larger than the sum of its proper divisors (11329978412).

22659956818 is a wasteful number, since it uses less digits than its factorization.

22659956818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11329978411.

The product of its digits is 18662400, while the sum is 61.

The spelling of 22659956818 in words is "twenty-two billion, six hundred fifty-nine million, nine hundred fifty-six thousand, eight hundred eighteen".