999268133957 has 2 divisors, whose sum is σ = 999268133958. Its totient is φ = 999268133956.

The previous prime is 999268133909. The next prime is 999268133999. The reversal of 999268133957 is 759331862999.

It is a Cunningham number, because it is equal to 999634²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999268133956 + 1 = 999634^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 999268133957 - 2²⁶ = 999201025093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999268133057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499634066978 + 499634066979.

It is an arithmetic number, because the mean of its divisors is an integer number (499634066979).

Almost surely, 2^999268133957 is an apocalyptic number.

It is an amenable number.

999268133957 is a deficient number, since it is larger than the sum of its proper divisors (1).

999268133957 is an equidigital number, since it uses as much as digits as its factorization.

999268133957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198404640, while the sum is 71.

The spelling of 999268133957 in words is "nine hundred ninety-nine billion, two hundred sixty-eight million, one hundred thirty-three thousand, nine hundred fifty-seven".