999972617299 has 2 divisors, whose sum is σ = 999972617300. Its totient is φ = 999972617298.

The previous prime is 999972617257. The next prime is 999972617309. The reversal of 999972617299 is 992716279999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999972617299 - 2⁹ = 999972616787 is a prime.

It is not a weakly prime, because it can be changed into another prime (999972611299) 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, 499986308649 + 499986308650.

It is an arithmetic number, because the mean of its divisors is an integer number (499986308650).

Almost surely, 2^999972617299 is an apocalyptic number.

999972617299 is a deficient number, since it is larger than the sum of its proper divisors (1).

999972617299 is an equidigital number, since it uses as much as digits as its factorization.

999972617299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 624974616, while the sum is 79.

The spelling of 999972617299 in words is "nine hundred ninety-nine billion, nine hundred seventy-two million, six hundred seventeen thousand, two hundred ninety-nine".