23805712681 has 3 divisors (see below), whose sum is σ = 23805866973. Its totient is φ = 23805558390.

The previous prime is 23805712673. The next prime is 23805712691. The reversal of 23805712681 is 18621750832.

The square root of 23805712681 is 154291.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 23805712681 - 2³ = 23805712673 is a prime.

It is a super-2 number, since 2×23805712681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23805712631) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 77146 + ... + 231436.

It is an arithmetic number, because the mean of its divisors is an integer number (7935288991).

Almost surely, 2^23805712681 is an apocalyptic number.

23805712681 is the 154291-st square number.

23805712681 is the 77146-th centered octagonal number.

It is an amenable number.

23805712681 is a deficient number, since it is larger than the sum of its proper divisors (154292).

23805712681 is an frugal number, since it uses more digits than its factorization.

23805712681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308582 (or 154291 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 23805712681 in words is "twenty-three billion, eight hundred five million, seven hundred twelve thousand, six hundred eighty-one".