8139917126899 has 2 divisors, whose sum is σ = 8139917126900. Its totient is φ = 8139917126898.

The previous prime is 8139917126893. The next prime is 8139917126917. The reversal of 8139917126899 is 9986217199318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8139917126899 - 2¹⁷ = 8139916995827 is a prime.

It is not a weakly prime, because it can be changed into another prime (8139917126893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069958563449 + 4069958563450.

It is an arithmetic number, because the mean of its divisors is an integer number (4069958563450).

Almost surely, 2^{8139917126899} is an apocalyptic number.

8139917126899 is a deficient number, since it is larger than the sum of its proper divisors (1).

8139917126899 is an equidigital number, since it uses as much as digits as its factorization.

8139917126899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105815808, while the sum is 73.

The spelling of 8139917126899 in words is "eight trillion, one hundred thirty-nine billion, nine hundred seventeen million, one hundred twenty-six thousand, eight hundred ninety-nine".