999953670536017 has 2 divisors, whose sum is σ = 999953670536018. Its totient is φ = 999953670536016.

The previous prime is 999953670536011. The next prime is 999953670536087. The reversal of 999953670536017 is 710635076359999.

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., 507822439127056 + 492131231408961 = 22534916^2 + 22184031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999953670536017 is a prime.

It is not a weakly prime, because it can be changed into another prime (999953670536011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499976835268008 + 499976835268009.

It is an arithmetic number, because the mean of its divisors is an integer number (499976835268009).

Almost surely, 2^{999953670536017} is an apocalyptic number.

It is an amenable number.

999953670536017 is a deficient number, since it is larger than the sum of its proper divisors (1).

999953670536017 is an equidigital number, since it uses as much as digits as its factorization.

999953670536017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2604060900, while the sum is 79.

The spelling of 999953670536017 in words is "nine hundred ninety-nine trillion, nine hundred fifty-three billion, six hundred seventy million, five hundred thirty-six thousand, seventeen".