22909985591 has 2 divisors, whose sum is σ = 22909985592. Its totient is φ = 22909985590.

The previous prime is 22909985557. The next prime is 22909985611. The reversal of 22909985591 is 19558990922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22909985591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22909985591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22909985531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11454992795 + 11454992796.

It is an arithmetic number, because the mean of its divisors is an integer number (11454992796).

Almost surely, 2^22909985591 is an apocalyptic number.

22909985591 is a deficient number, since it is larger than the sum of its proper divisors (1).

22909985591 is an equidigital number, since it uses as much as digits as its factorization.

22909985591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5248800, while the sum is 59.

The spelling of 22909985591 in words is "twenty-two billion, nine hundred nine million, nine hundred eighty-five thousand, five hundred ninety-one".