23102520205 has 4 divisors (see below), whose sum is σ = 27723024252. Its totient is φ = 18482016160.

The previous prime is 23102520193. The next prime is 23102520251. The reversal of 23102520205 is 50202520132.

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 5282673124 + 17819847081 = 72682^2 + 133491^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23102520205 is a prime.

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, 2310252016 + ... + 2310252025.

It is an arithmetic number, because the mean of its divisors is an integer number (6930756063).

Almost surely, 2^23102520205 is an apocalyptic number.

It is an amenable number.

23102520205 is a deficient number, since it is larger than the sum of its proper divisors (4620504047).

23102520205 is an equidigital number, since it uses as much as digits as its factorization.

23102520205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620504046.

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 23102520205 in words is "twenty-three billion, one hundred two million, five hundred twenty thousand, two hundred five".