12395519993 has 2 divisors, whose sum is σ = 12395519994. Its totient is φ = 12395519992.

The previous prime is 12395519977. The next prime is 12395520023. The reversal of 12395519993 is 39991559321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10791677689 + 1603842304 = 103883^2 + 40048^2 .

It is a cyclic number.

It is not a de Polignac number, because 12395519993 - 2⁴ = 12395519977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12395519093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6197759996 + 6197759997.

It is an arithmetic number, because the mean of its divisors is an integer number (6197759997).

Almost surely, 2^12395519993 is an apocalyptic number.

It is an amenable number.

12395519993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12395519993 is an equidigital number, since it uses as much as digits as its factorization.

12395519993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2952450, while the sum is 56.

The spelling of 12395519993 in words is "twelve billion, three hundred ninety-five million, five hundred nineteen thousand, nine hundred ninety-three".