22638089777 has 2 divisors, whose sum is σ = 22638089778. Its totient is φ = 22638089776.

The previous prime is 22638089759. The next prime is 22638089801. The reversal of 22638089777 is 77798083622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21381458176 + 1256631601 = 146224^2 + 35449^2 .

It is a cyclic number.

It is not a de Polignac number, because 22638089777 - 2⁶ = 22638089713 is a prime.

It is not a weakly prime, because it can be changed into another prime (22638089477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319044888 + 11319044889.

It is an arithmetic number, because the mean of its divisors is an integer number (11319044889).

Almost surely, 2^22638089777 is an apocalyptic number.

It is an amenable number.

22638089777 is a deficient number, since it is larger than the sum of its proper divisors (1).

22638089777 is an equidigital number, since it uses as much as digits as its factorization.

22638089777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 22638089777 in words is "twenty-two billion, six hundred thirty-eight million, eighty-nine thousand, seven hundred seventy-seven".