23565275949 has 4 divisors (see below), whose sum is σ = 31420367936. Its totient is φ = 15710183964.

The previous prime is 23565275893. The next prime is 23565275999. The reversal of 23565275949 is 94957256532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23565275949 - 2⁸ = 23565275693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23565275999) 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 in 3 ways as a sum of consecutive naturals, for example, 3927545989 + ... + 3927545994.

It is an arithmetic number, because the mean of its divisors is an integer number (7855091984).

Almost surely, 2^23565275949 is an apocalyptic number.

It is an amenable number.

23565275949 is a deficient number, since it is larger than the sum of its proper divisors (7855091987).

23565275949 is an equidigital number, since it uses as much as digits as its factorization.

23565275949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855091986.

The product of its digits is 20412000, while the sum is 57.

The spelling of 23565275949 in words is "twenty-three billion, five hundred sixty-five million, two hundred seventy-five thousand, nine hundred forty-nine".