200491935817 has 2 divisors, whose sum is σ = 200491935818. Its totient is φ = 200491935816.

The previous prime is 200491935803. The next prime is 200491935829. The reversal of 200491935817 is 718539194002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116452245001 + 84039690816 = 341251^2 + 289896^2 .

It is a cyclic number.

It is not a de Polignac number, because 200491935817 - 2¹⁹ = 200491411529 is a prime.

It is not a weakly prime, because it can be changed into another prime (200491935877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100245967908 + 100245967909.

It is an arithmetic number, because the mean of its divisors is an integer number (100245967909).

Almost surely, 2^200491935817 is an apocalyptic number.

It is an amenable number.

200491935817 is a deficient number, since it is larger than the sum of its proper divisors (1).

200491935817 is an equidigital number, since it uses as much as digits as its factorization.

200491935817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 200491935817 in words is "two hundred billion, four hundred ninety-one million, nine hundred thirty-five thousand, eight hundred seventeen".