23642689771 has 2 divisors, whose sum is σ = 23642689772. Its totient is φ = 23642689770.

The previous prime is 23642689751. The next prime is 23642689781. The reversal of 23642689771 is 17798624632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23642689771 - 2¹⁹ = 23642165483 is a prime.

It is not a weakly prime, because it can be changed into another prime (23642689751) 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, 11821344885 + 11821344886.

It is an arithmetic number, because the mean of its divisors is an integer number (11821344886).

Almost surely, 2^23642689771 is an apocalyptic number.

23642689771 is a deficient number, since it is larger than the sum of its proper divisors (1).

23642689771 is an equidigital number, since it uses as much as digits as its factorization.

23642689771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The spelling of 23642689771 in words is "twenty-three billion, six hundred forty-two million, six hundred eighty-nine thousand, seven hundred seventy-one".