22638969701 has 2 divisors, whose sum is σ = 22638969702. Its totient is φ = 22638969700.

The previous prime is 22638969697. The next prime is 22638969719. The reversal of 22638969701 is 10796983622.

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., 18265792801 + 4373176900 = 135151^2 + 66130^2 .

It is a cyclic number.

It is not a de Polignac number, because 22638969701 - 2² = 22638969697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22638969721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319484850 + 11319484851.

It is an arithmetic number, because the mean of its divisors is an integer number (11319484851).

Almost surely, 2^22638969701 is an apocalyptic number.

It is an amenable number.

22638969701 is a deficient number, since it is larger than the sum of its proper divisors (1).

22638969701 is an equidigital number, since it uses as much as digits as its factorization.

22638969701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 22638969701 in words is "twenty-two billion, six hundred thirty-eight million, nine hundred sixty-nine thousand, seven hundred one".