22661155116571 has 2 divisors, whose sum is σ = 22661155116572. Its totient is φ = 22661155116570.

The previous prime is 22661155116557. The next prime is 22661155116623. The reversal of 22661155116571 is 17561155116622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22661155116571 - 2⁷ = 22661155116443 is a prime.

It is not a weakly prime, because it can be changed into another prime (22661155116671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11330577558285 + 11330577558286.

It is an arithmetic number, because the mean of its divisors is an integer number (11330577558286).

Almost surely, 2^{22661155116571} is an apocalyptic number.

22661155116571 is a deficient number, since it is larger than the sum of its proper divisors (1).

22661155116571 is an equidigital number, since it uses as much as digits as its factorization.

22661155116571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 49.

The spelling of 22661155116571 in words is "twenty-two trillion, six hundred sixty-one billion, one hundred fifty-five million, one hundred sixteen thousand, five hundred seventy-one".