22331580637 has 2 divisors, whose sum is σ = 22331580638. Its totient is φ = 22331580636.

The previous prime is 22331580539. The next prime is 22331580643. The reversal of 22331580637 is 73608513322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13872363961 + 8459216676 = 117781^2 + 91974^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331580637 - 2¹⁵ = 22331547869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22331580637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22331580697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165790318 + 11165790319.

It is an arithmetic number, because the mean of its divisors is an integer number (11165790319).

Almost surely, 2^22331580637 is an apocalyptic number.

It is an amenable number.

22331580637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331580637 is an equidigital number, since it uses as much as digits as its factorization.

22331580637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 22331580637 in words is "twenty-two billion, three hundred thirty-one million, five hundred eighty thousand, six hundred thirty-seven".