82997499491 has 2 divisors, whose sum is σ = 82997499492. Its totient is φ = 82997499490.

The previous prime is 82997499479. The next prime is 82997499509. The reversal of 82997499491 is 19499479928.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82997499491 - 2³⁰ = 81923757667 is a prime.

It is not a weakly prime, because it can be changed into another prime (82997499391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41498749745 + 41498749746.

It is an arithmetic number, because the mean of its divisors is an integer number (41498749746).

Almost surely, 2^82997499491 is an apocalyptic number.

82997499491 is a deficient number, since it is larger than the sum of its proper divisors (1).

82997499491 is an equidigital number, since it uses as much as digits as its factorization.

82997499491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105815808, while the sum is 71.

The spelling of 82997499491 in words is "eighty-two billion, nine hundred ninety-seven million, four hundred ninety-nine thousand, four hundred ninety-one".