999867992273 has 2 divisors, whose sum is σ = 999867992274. Its totient is φ = 999867992272.

The previous prime is 999867992251. The next prime is 999867992303. The reversal of 999867992273 is 372299768999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987513225169 + 12354767104 = 993737^2 + 111152^2 .

It is a cyclic number.

It is not a de Polignac number, because 999867992273 - 2⁶ = 999867992209 is a prime.

It is not a weakly prime, because it can be changed into another prime (999867902273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499933996136 + 499933996137.

It is an arithmetic number, because the mean of its divisors is an integer number (499933996137).

Almost surely, 2^999867992273 is an apocalyptic number.

It is an amenable number.

999867992273 is a deficient number, since it is larger than the sum of its proper divisors (1).

999867992273 is an equidigital number, since it uses as much as digits as its factorization.

999867992273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1666598976, while the sum is 80.

The spelling of 999867992273 in words is "nine hundred ninety-nine billion, eight hundred sixty-seven million, nine hundred ninety-two thousand, two hundred seventy-three".