23842036637 has 2 divisors, whose sum is σ = 23842036638. Its totient is φ = 23842036636.

The previous prime is 23842036511. The next prime is 23842036663. The reversal of 23842036637 is 73663024832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20177066116 + 3664970521 = 142046^2 + 60539^2 .

It is a cyclic number.

It is not a de Polignac number, because 23842036637 - 2³⁴ = 6662167453 is a prime.

It is a super-2 number, since 2×23842036637² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23842086637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11921018318 + 11921018319.

It is an arithmetic number, because the mean of its divisors is an integer number (11921018319).

Almost surely, 2^23842036637 is an apocalyptic number.

It is an amenable number.

23842036637 is a deficient number, since it is larger than the sum of its proper divisors (1).

23842036637 is an equidigital number, since it uses as much as digits as its factorization.

23842036637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 23842036637 in words is "twenty-three billion, eight hundred forty-two million, thirty-six thousand, six hundred thirty-seven".