999874757813 has 2 divisors, whose sum is σ = 999874757814. Its totient is φ = 999874757812.

The previous prime is 999874757779. The next prime is 999874757881. The reversal of 999874757813 is 318757478999.

999874757813 = 707062² + 707063².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499938085969 + 499936671844 = 707063^2 + 707062^2 .

It is a cyclic number.

It is not a de Polignac number, because 999874757813 - 2²⁸ = 999606322357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999874757513) 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, 499937378906 + 499937378907.

It is an arithmetic number, because the mean of its divisors is an integer number (499937378907).

Almost surely, 2^999874757813 is an apocalyptic number.

999874757813 is the 707063-rd centered square number.

It is an amenable number.

999874757813 is a deficient number, since it is larger than the sum of its proper divisors (1).

999874757813 is an equidigital number, since it uses as much as digits as its factorization.

999874757813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960180480, while the sum is 77.

The spelling of 999874757813 in words is "nine hundred ninety-nine billion, eight hundred seventy-four million, seven hundred fifty-seven thousand, eight hundred thirteen".