22513324198861 has 2 divisors, whose sum is σ = 22513324198862. Its totient is φ = 22513324198860.

The previous prime is 22513324198843. The next prime is 22513324198913. The reversal of 22513324198861 is 16889142331522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21284982009225 + 1228342189636 = 4613565^2 + 1108306^2 .

It is a cyclic number.

It is not a de Polignac number, because 22513324198861 - 2⁷ = 22513324198733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22513324198801) 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, 11256662099430 + 11256662099431.

It is an arithmetic number, because the mean of its divisors is an integer number (11256662099431).

Almost surely, 2^{22513324198861} is an apocalyptic number.

It is an amenable number.

22513324198861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22513324198861 is an equidigital number, since it uses as much as digits as its factorization.

22513324198861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 55.

The spelling of 22513324198861 in words is "twenty-two trillion, five hundred thirteen billion, three hundred twenty-four million, one hundred ninety-eight thousand, eight hundred sixty-one".