23456871205 has 4 divisors (see below), whose sum is σ = 28148245452. Its totient is φ = 18765496960.

The previous prime is 23456871181. The next prime is 23456871271. The reversal of 23456871205 is 50217865432.

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 12319446049 + 11137425156 = 110993^2 + 105534^2 .

It is not a de Polignac number, because 23456871205 - 2¹⁵ = 23456838437 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, 2345687116 + ... + 2345687125.

It is an arithmetic number, because the mean of its divisors is an integer number (7037061363).

Almost surely, 2^23456871205 is an apocalyptic number.

It is an amenable number.

23456871205 is a deficient number, since it is larger than the sum of its proper divisors (4691374247).

23456871205 is an equidigital number, since it uses as much as digits as its factorization.

23456871205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691374246.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 23456871205 in words is "twenty-three billion, four hundred fifty-six million, eight hundred seventy-one thousand, two hundred five".