23805712691 has 2 divisors, whose sum is σ = 23805712692. Its totient is φ = 23805712690.

The previous prime is 23805712673. The next prime is 23805712741. The reversal of 23805712691 is 19621750832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23805712691 - 2⁶ = 23805712627 is a prime.

It is a super-2 number, since 2×23805712691² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23805712631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11902856345 + 11902856346.

It is an arithmetic number, because the mean of its divisors is an integer number (11902856346).

Almost surely, 2^23805712691 is an apocalyptic number.

23805712691 is a deficient number, since it is larger than the sum of its proper divisors (1).

23805712691 is an equidigital number, since it uses as much as digits as its factorization.

23805712691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 23805712691 in words is "twenty-three billion, eight hundred five million, seven hundred twelve thousand, six hundred ninety-one".