12318789499 has 2 divisors, whose sum is σ = 12318789500. Its totient is φ = 12318789498.

The previous prime is 12318789473. The next prime is 12318789503. The reversal of 12318789499 is 99498781321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12318789499 - 2²¹ = 12316692347 is a prime.

It is not a weakly prime, because it can be changed into another prime (12318789199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159394749 + 6159394750.

It is an arithmetic number, because the mean of its divisors is an integer number (6159394750).

Almost surely, 2^12318789499 is an apocalyptic number.

12318789499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318789499 is an equidigital number, since it uses as much as digits as its factorization.

12318789499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 61.

The spelling of 12318789499 in words is "twelve billion, three hundred eighteen million, seven hundred eighty-nine thousand, four hundred ninety-nine".