22615948973 has 2 divisors, whose sum is σ = 22615948974. Its totient is φ = 22615948972.

The previous prime is 22615948897. The next prime is 22615949011. The reversal of 22615948973 is 37984951622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16693415209 + 5922533764 = 129203^2 + 76958^2 .

It is a cyclic number.

It is not a de Polignac number, because 22615948973 - 2⁸ = 22615948717 is a prime.

It is a super-2 number, since 2×22615948973² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22615941973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11307974486 + 11307974487.

It is an arithmetic number, because the mean of its divisors is an integer number (11307974487).

Almost surely, 2^22615948973 is an apocalyptic number.

It is an amenable number.

22615948973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615948973 is an equidigital number, since it uses as much as digits as its factorization.

22615948973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The spelling of 22615948973 in words is "twenty-two billion, six hundred fifteen million, nine hundred forty-eight thousand, nine hundred seventy-three".