22520042989 has 2 divisors, whose sum is σ = 22520042990. Its totient is φ = 22520042988.

The previous prime is 22520042959. The next prime is 22520043001. The reversal of 22520042989 is 98924002522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19555784964 + 2964258025 = 139842^2 + 54445^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520042989 - 2²⁹ = 21983172077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22520042929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260021494 + 11260021495.

It is an arithmetic number, because the mean of its divisors is an integer number (11260021495).

Almost surely, 2^22520042989 is an apocalyptic number.

It is an amenable number.

22520042989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520042989 is an equidigital number, since it uses as much as digits as its factorization.

22520042989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 22520042989 in words is "twenty-two billion, five hundred twenty million, forty-two thousand, nine hundred eighty-nine".