23365662505 has 4 divisors (see below), whose sum is σ = 28038795012. Its totient is φ = 18692530000.

The previous prime is 23365662499. The next prime is 23365662553. The reversal of 23365662505 is 50526656332.

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 12785277184 + 10580385321 = 113072^2 + 102861^2 .

It is not a de Polignac number, because 23365662505 - 2⁵ = 23365662473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 2336566246 + ... + 2336566255.

It is an arithmetic number, because the mean of its divisors is an integer number (7009698753).

Almost surely, 2^23365662505 is an apocalyptic number.

It is an amenable number.

23365662505 is a deficient number, since it is larger than the sum of its proper divisors (4673132507).

23365662505 is an equidigital number, since it uses as much as digits as its factorization.

23365662505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673132506.

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 23365662505 in words is "twenty-three billion, three hundred sixty-five million, six hundred sixty-two thousand, five hundred five".