22556131165613 has 2 divisors, whose sum is σ = 22556131165614. Its totient is φ = 22556131165612.

The previous prime is 22556131165583. The next prime is 22556131165637. The reversal of 22556131165613 is 31656113165522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14506325186089 + 8049805979524 = 3808717^2 + 2837218^2 .

It is a cyclic number.

It is not a de Polignac number, because 22556131165613 - 2²² = 22556126971309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22556131165913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11278065582806 + 11278065582807.

It is an arithmetic number, because the mean of its divisors is an integer number (11278065582807).

Almost surely, 2^{22556131165613} is an apocalyptic number.

It is an amenable number.

22556131165613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22556131165613 is an equidigital number, since it uses as much as digits as its factorization.

22556131165613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 47.

The spelling of 22556131165613 in words is "twenty-two trillion, five hundred fifty-six billion, one hundred thirty-one million, one hundred sixty-five thousand, six hundred thirteen".