22237542637 has 2 divisors, whose sum is σ = 22237542638. Its totient is φ = 22237542636.

The previous prime is 22237542527. The next prime is 22237542641. The reversal of 22237542637 is 73624573222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22036214916 + 201327721 = 148446^2 + 14189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22237542637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22237542593 and 22237542602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22237542037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118771318 + 11118771319.

It is an arithmetic number, because the mean of its divisors is an integer number (11118771319).

Almost surely, 2^22237542637 is an apocalyptic number.

It is an amenable number.

22237542637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22237542637 is an equidigital number, since it uses as much as digits as its factorization.

22237542637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 43.

The spelling of 22237542637 in words is "twenty-two billion, two hundred thirty-seven million, five hundred forty-two thousand, six hundred thirty-seven".