22217688677 has 8 divisors (see below), whose sum is σ = 22353395064. Its totient is φ = 22082390208.

The previous prime is 22217688653. The next prime is 22217688679. The reversal of 22217688677 is 77688671222.

It can be written as a sum of positive squares in 4 ways, for example, as 12390138721 + 9827549956 = 111311^2 + 99134^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22217688677 - 2¹⁸ = 22217426533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217688679) 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, 7643 + ... + 210935.

It is an arithmetic number, because the mean of its divisors is an integer number (2794174383).

Almost surely, 2^22217688677 is an apocalyptic number.

It is an amenable number.

22217688677 is a deficient number, since it is larger than the sum of its proper divisors (135706387).

22217688677 is a wasteful number, since it uses less digits than its factorization.

22217688677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203959.

The product of its digits is 6322176, while the sum is 56.

The spelling of 22217688677 in words is "twenty-two billion, two hundred seventeen million, six hundred eighty-eight thousand, six hundred seventy-seven".