23513205055 has 4 divisors (see below), whose sum is σ = 28215846072. Its totient is φ = 18810564040.

The previous prime is 23513204989. The next prime is 23513205103. The reversal of 23513205055 is 55050231532.

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

It is not a de Polignac number, because 23513205055 - 2²⁷ = 23378987327 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351320501 + ... + 2351320510.

It is an arithmetic number, because the mean of its divisors is an integer number (7053961518).

Almost surely, 2^23513205055 is an apocalyptic number.

23513205055 is a deficient number, since it is larger than the sum of its proper divisors (4702641017).

23513205055 is an equidigital number, since it uses as much as digits as its factorization.

23513205055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702641016.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 23513205055 its reverse (55050231532), we get a palindrome (78563436587).

The spelling of 23513205055 in words is "twenty-three billion, five hundred thirteen million, two hundred five thousand, fifty-five".