22556142452639 has 2 divisors, whose sum is σ = 22556142452640. Its totient is φ = 22556142452638.

The previous prime is 22556142452593. The next prime is 22556142452699. The reversal of 22556142452639 is 93625424165522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22556142452639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22556142452699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11278071226319 + 11278071226320.

It is an arithmetic number, because the mean of its divisors is an integer number (11278071226320).

Almost surely, 2^{22556142452639} is an apocalyptic number.

22556142452639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22556142452639 is an equidigital number, since it uses as much as digits as its factorization.

22556142452639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104000, while the sum is 56.

The spelling of 22556142452639 in words is "twenty-two trillion, five hundred fifty-six billion, one hundred forty-two million, four hundred fifty-two thousand, six hundred thirty-nine".