23495372561 has 4 divisors (see below), whose sum is σ = 23546339124. Its totient is φ = 23444406000.

The previous prime is 23495372497. The next prime is 23495372599. The reversal of 23495372561 is 16527359432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9105930625 + 14389441936 = 95425^2 + 119956^2 .

It is a cyclic number.

It is not a de Polignac number, because 23495372561 - 2⁶ = 23495372497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23495372861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25482590 + ... + 25483511.

It is an arithmetic number, because the mean of its divisors is an integer number (5886584781).

Almost surely, 2^23495372561 is an apocalyptic number.

It is an amenable number.

23495372561 is a deficient number, since it is larger than the sum of its proper divisors (50966563).

23495372561 is an equidigital number, since it uses as much as digits as its factorization.

23495372561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50966562.

The product of its digits is 1360800, while the sum is 47.

The spelling of 23495372561 in words is "twenty-three billion, four hundred ninety-five million, three hundred seventy-two thousand, five hundred sixty-one".