22631889551 has 2 divisors, whose sum is σ = 22631889552. Its totient is φ = 22631889550.

The previous prime is 22631889547. The next prime is 22631889569. The reversal of 22631889551 is 15598813622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22631889551 - 2² = 22631889547 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22631889551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22631889521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11315944775 + 11315944776.

It is an arithmetic number, because the mean of its divisors is an integer number (11315944776).

Almost surely, 2^22631889551 is an apocalyptic number.

22631889551 is a deficient number, since it is larger than the sum of its proper divisors (1).

22631889551 is an equidigital number, since it uses as much as digits as its factorization.

22631889551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 22631889551 in words is "twenty-two billion, six hundred thirty-one million, eight hundred eighty-nine thousand, five hundred fifty-one".