12395824961 has 4 divisors (see below), whose sum is σ = 13349349972. Its totient is φ = 11442299952.

The previous prime is 12395824939. The next prime is 12395824963. The reversal of 12395824961 is 16942859321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16942859321 = 68443 ⋅247547.

It can be written as a sum of positive squares in 2 ways, for example, as 1684609936 + 10711215025 = 41044^2 + 103495^2 .

It is a cyclic number.

It is not a de Polignac number, because 12395824961 - 2²⁶ = 12328716097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12395824963) 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, 476762486 + ... + 476762511.

It is an arithmetic number, because the mean of its divisors is an integer number (3337337493).

Almost surely, 2^12395824961 is an apocalyptic number.

It is an amenable number.

12395824961 is a deficient number, since it is larger than the sum of its proper divisors (953525011).

12395824961 is an equidigital number, since it uses as much as digits as its factorization.

12395824961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953525010.

The product of its digits is 933120, while the sum is 50.

The spelling of 12395824961 in words is "twelve billion, three hundred ninety-five million, eight hundred twenty-four thousand, nine hundred sixty-one".