12307138993 has 2 divisors, whose sum is σ = 12307138994. Its totient is φ = 12307138992.

The previous prime is 12307138939. The next prime is 12307138999. The reversal of 12307138993 is 39983170321.

Together with previous prime (12307138939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12252718864 + 54420129 = 110692^2 + 7377^2 .

It is a cyclic number.

It is not a de Polignac number, because 12307138993 - 2³³ = 3717204401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12307138999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6153569496 + 6153569497.

It is an arithmetic number, because the mean of its divisors is an integer number (6153569497).

Almost surely, 2^12307138993 is an apocalyptic number.

It is an amenable number.

12307138993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12307138993 is an equidigital number, since it uses as much as digits as its factorization.

12307138993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 12307138993 in words is "twelve billion, three hundred seven million, one hundred thirty-eight thousand, nine hundred ninety-three".