22637566487 has 2 divisors, whose sum is σ = 22637566488. Its totient is φ = 22637566486.

The previous prime is 22637566463. The next prime is 22637566499. The reversal of 22637566487 is 78466573622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22637566487 - 2¹⁸ = 22637304343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22637566417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11318783243 + 11318783244.

It is an arithmetic number, because the mean of its divisors is an integer number (11318783244).

Almost surely, 2^22637566487 is an apocalyptic number.

22637566487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22637566487 is an equidigital number, since it uses as much as digits as its factorization.

22637566487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 56.

The spelling of 22637566487 in words is "twenty-two billion, six hundred thirty-seven million, five hundred sixty-six thousand, four hundred eighty-seven".