23536775881 has 2 divisors, whose sum is σ = 23536775882. Its totient is φ = 23536775880.

The previous prime is 23536775839. The next prime is 23536775903. The reversal of 23536775881 is 18857763532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20095897600 + 3440878281 = 141760^2 + 58659^2 .

It is a cyclic number.

It is not a de Polignac number, because 23536775881 - 2²⁵ = 23503221449 is a prime.

It is a super-2 number, since 2×23536775881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23536772881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11768387940 + 11768387941.

It is an arithmetic number, because the mean of its divisors is an integer number (11768387941).

Almost surely, 2^23536775881 is an apocalyptic number.

It is an amenable number.

23536775881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23536775881 is an equidigital number, since it uses as much as digits as its factorization.

23536775881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 55.

The spelling of 23536775881 in words is "twenty-three billion, five hundred thirty-six million, seven hundred seventy-five thousand, eight hundred eighty-one".