22537757491 has 2 divisors, whose sum is σ = 22537757492. Its totient is φ = 22537757490.

The previous prime is 22537757467. The next prime is 22537757503. The reversal of 22537757491 is 19475773522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22537757491 is a prime.

It is not a weakly prime, because it can be changed into another prime (22537757401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268878745 + 11268878746.

It is an arithmetic number, because the mean of its divisors is an integer number (11268878746).

Almost surely, 2^22537757491 is an apocalyptic number.

22537757491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22537757491 is an equidigital number, since it uses as much as digits as its factorization.

22537757491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3704400, while the sum is 52.

The spelling of 22537757491 in words is "twenty-two billion, five hundred thirty-seven million, seven hundred fifty-seven thousand, four hundred ninety-one".