12995418185 has 4 divisors (see below), whose sum is σ = 15594501828. Its totient is φ = 10396334544.

The previous prime is 12995418167. The next prime is 12995418187. The reversal of 12995418185 is 58181459921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58181459921 = 13 ⋅4475496917.

It can be written as a sum of positive squares in 2 ways, for example, as 2457779776 + 10537638409 = 49576^2 + 102653^2 .

It is a cyclic number.

It is not a de Polignac number, because 12995418185 - 2¹⁰ = 12995417161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12995418187) 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, 1299541814 + ... + 1299541823.

It is an arithmetic number, because the mean of its divisors is an integer number (3898625457).

Almost surely, 2^12995418185 is an apocalyptic number.

It is an amenable number.

12995418185 is a deficient number, since it is larger than the sum of its proper divisors (2599083643).

12995418185 is an equidigital number, since it uses as much as digits as its factorization.

12995418185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599083642.

The product of its digits is 1036800, while the sum is 53.

The spelling of 12995418185 in words is "twelve billion, nine hundred ninety-five million, four hundred eighteen thousand, one hundred eighty-five".