22556764128929 has 2 divisors, whose sum is σ = 22556764128930. Its totient is φ = 22556764128928.

The previous prime is 22556764128889. The next prime is 22556764128947. The reversal of 22556764128929 is 92982146765522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12164909279329 + 10391854849600 = 3487823^2 + 3223640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22556764128929 is a prime.

It is not a weakly prime, because it can be changed into another prime (22556764128949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11278382064464 + 11278382064465.

It is an arithmetic number, because the mean of its divisors is an integer number (11278382064465).

Almost surely, 2^{22556764128929} is an apocalyptic number.

It is an amenable number.

22556764128929 is a deficient number, since it is larger than the sum of its proper divisors (1).

22556764128929 is an equidigital number, since it uses as much as digits as its factorization.

22556764128929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 261273600, while the sum is 68.

The spelling of 22556764128929 in words is "twenty-two trillion, five hundred fifty-six billion, seven hundred sixty-four million, one hundred twenty-eight thousand, nine hundred twenty-nine".