22681999933 has 2 divisors, whose sum is σ = 22681999934. Its totient is φ = 22681999932.

The previous prime is 22681999853. The next prime is 22681999961. The reversal of 22681999933 is 33999918622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15861387364 + 6820612569 = 125942^2 + 82587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22681999933 is a prime.

It is a super-2 number, since 2×22681999933² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22681979933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11340999966 + 11340999967.

It is an arithmetic number, because the mean of its divisors is an integer number (11340999967).

Almost surely, 2^22681999933 is an apocalyptic number.

It is an amenable number.

22681999933 is a deficient number, since it is larger than the sum of its proper divisors (1).

22681999933 is an equidigital number, since it uses as much as digits as its factorization.

22681999933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11337408, while the sum is 61.

The spelling of 22681999933 in words is "twenty-two billion, six hundred eighty-one million, nine hundred ninety-nine thousand, nine hundred thirty-three".