23957940563 has 4 divisors (see below), whose sum is σ = 23964403680. Its totient is φ = 23951477448.

The previous prime is 23957940529. The next prime is 23957940571. The reversal of 23957940563 is 36504975932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23957940563 - 2¹⁸ = 23957678419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23957940463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3225995 + ... + 3233412.

It is an arithmetic number, because the mean of its divisors is an integer number (5991100920).

Almost surely, 2^23957940563 is an apocalyptic number.

23957940563 is a deficient number, since it is larger than the sum of its proper divisors (6463117).

23957940563 is an equidigital number, since it uses as much as digits as its factorization.

23957940563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463116.

The product of its (nonzero) digits is 6123600, while the sum is 53.

The spelling of 23957940563 in words is "twenty-three billion, nine hundred fifty-seven million, nine hundred forty thousand, five hundred sixty-three".