12395809927 has 2 divisors, whose sum is σ = 12395809928. Its totient is φ = 12395809926.

The previous prime is 12395809897. The next prime is 12395809949. The reversal of 12395809927 is 72990859321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12395809927 is a prime.

It is a super-2 number, since 2×12395809927² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12395807927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6197904963 + 6197904964.

It is an arithmetic number, because the mean of its divisors is an integer number (6197904964).

Almost surely, 2^12395809927 is an apocalyptic number.

12395809927 is a deficient number, since it is larger than the sum of its proper divisors (1).

12395809927 is an equidigital number, since it uses as much as digits as its factorization.

12395809927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 12395809927 in words is "twelve billion, three hundred ninety-five million, eight hundred nine thousand, nine hundred twenty-seven".