999997538090753 has 2 divisors, whose sum is σ = 999997538090754. Its totient is φ = 999997538090752.

The previous prime is 999997538090737. The next prime is 999997538090923. The reversal of 999997538090753 is 357090835799999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748574907849409 + 251422630241344 = 27360097^2 + 15856312^2 .

It is a cyclic number.

It is not a de Polignac number, because 999997538090753 - 2⁴ = 999997538090737 is a prime.

It is a super-3 number, since 3×999997538090753³ (a number of 46 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (999997538090053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998769045376 + 499998769045377.

It is an arithmetic number, because the mean of its divisors is an integer number (499998769045377).

Almost surely, 2^{999997538090753} is an apocalyptic number.

It is an amenable number.

999997538090753 is a deficient number, since it is larger than the sum of its proper divisors (1).

999997538090753 is an equidigital number, since it uses as much as digits as its factorization.

999997538090753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46873096200, while the sum is 92.

The spelling of 999997538090753 in words is "nine hundred ninety-nine trillion, nine hundred ninety-seven billion, five hundred thirty-eight million, ninety thousand, seven hundred fifty-three".