22981587478163 has 2 divisors, whose sum is σ = 22981587478164. Its totient is φ = 22981587478162.

The previous prime is 22981587478123. The next prime is 22981587478193. The reversal of 22981587478163 is 36187478518922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22981587478163 - 2¹² = 22981587474067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22981587478123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11490793739081 + 11490793739082.

It is an arithmetic number, because the mean of its divisors is an integer number (11490793739082).

Almost surely, 2^{22981587478163} is an apocalyptic number.

22981587478163 is a deficient number, since it is larger than the sum of its proper divisors (1).

22981587478163 is an equidigital number, since it uses as much as digits as its factorization.

22981587478163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 325140480, while the sum is 71.

The spelling of 22981587478163 in words is "twenty-two trillion, nine hundred eighty-one billion, five hundred eighty-seven million, four hundred seventy-eight thousand, one hundred sixty-three".