999999997764179 has 2 divisors, whose sum is σ = 999999997764180. Its totient is φ = 999999997764178.

The previous prime is 999999997764161. The next prime is 999999997764259. The reversal of 999999997764179 is 971467799999999.

999999997764179 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999999997764179 - 2²⁸ = 999999729328723 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999997767179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999998882089 + 499999998882090.

It is an arithmetic number, because the mean of its divisors is an integer number (499999998882090).

Almost surely, 2^{999999997764179} is an apocalyptic number.

999999997764179 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999997764179 is an equidigital number, since it uses as much as digits as its factorization.

999999997764179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3189245465448, while the sum is 113.

The spelling of 999999997764179 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-seven million, seven hundred sixty-four thousand, one hundred seventy-nine".