810494001497 has 2 divisors, whose sum is σ = 810494001498. Its totient is φ = 810494001496.

The previous prime is 810494001419. The next prime is 810494001509. The reversal of 810494001497 is 794100494018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589684232281 + 220809769216 = 767909^2 + 469904^2 .

It is a cyclic number.

It is not a de Polignac number, because 810494001497 - 2²⁰ = 810492952921 is a prime.

It is not a weakly prime, because it can be changed into another prime (810494001407) 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, 405247000748 + 405247000749.

It is an arithmetic number, because the mean of its divisors is an integer number (405247000749).

Almost surely, 2^810494001497 is an apocalyptic number.

It is an amenable number.

810494001497 is a deficient number, since it is larger than the sum of its proper divisors (1).

810494001497 is an equidigital number, since it uses as much as digits as its factorization.

810494001497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 810494001497 in words is "eight hundred ten billion, four hundred ninety-four million, one thousand, four hundred ninety-seven".