22809657641 has 2 divisors, whose sum is σ = 22809657642. Its totient is φ = 22809657640.

The previous prime is 22809657583. The next prime is 22809657701. The reversal of 22809657641 is 14675690822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14029218025 + 8780439616 = 118445^2 + 93704^2 .

It is a cyclic number.

It is not a de Polignac number, because 22809657641 - 2²² = 22805463337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22809657641.

It is not a weakly prime, because it can be changed into another prime (22809657341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11404828820 + 11404828821.

It is an arithmetic number, because the mean of its divisors is an integer number (11404828821).

Almost surely, 2^22809657641 is an apocalyptic number.

It is an amenable number.

22809657641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22809657641 is an equidigital number, since it uses as much as digits as its factorization.

22809657641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 22809657641 in words is "twenty-two billion, eight hundred nine million, six hundred fifty-seven thousand, six hundred forty-one".