23640713443 has 2 divisors, whose sum is σ = 23640713444. Its totient is φ = 23640713442.

The previous prime is 23640713431. The next prime is 23640713483. The reversal of 23640713443 is 34431704632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23640713443 - 2²¹ = 23638616291 is a prime.

It is not a weakly prime, because it can be changed into another prime (23640713483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11820356721 + 11820356722.

It is an arithmetic number, because the mean of its divisors is an integer number (11820356722).

Almost surely, 2^23640713443 is an apocalyptic number.

23640713443 is a deficient number, since it is larger than the sum of its proper divisors (1).

23640713443 is an equidigital number, since it uses as much as digits as its factorization.

23640713443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 23640713443 in words is "twenty-three billion, six hundred forty million, seven hundred thirteen thousand, four hundred forty-three".