999997753311049 has 2 divisors, whose sum is σ = 999997753311050. Its totient is φ = 999997753311048.

The previous prime is 999997753311023. The next prime is 999997753311119. The reversal of 999997753311049 is 940113357799999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881591407476025 + 118406345835024 = 29691605^2 + 10881468^2 .

It is a cyclic number.

It is not a de Polignac number, because 999997753311049 - 2⁵ = 999997753311017 is a prime.

It is a super-2 number, since 2×999997753311049² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999997753311449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998876655524 + 499998876655525.

It is an arithmetic number, because the mean of its divisors is an integer number (499998876655525).

Almost surely, 2^{999997753311049} is an apocalyptic number.

It is an amenable number.

999997753311049 is a deficient number, since it is larger than the sum of its proper divisors (1).

999997753311049 is an equidigital number, since it uses as much as digits as its factorization.

999997753311049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4687309620, while the sum is 85.

The spelling of 999997753311049 in words is "nine hundred ninety-nine trillion, nine hundred ninety-seven billion, seven hundred fifty-three million, three hundred eleven thousand, forty-nine".