491457068299 has 2 divisors, whose sum is σ = 491457068300. Its totient is φ = 491457068298.

The previous prime is 491457068293. The next prime is 491457068351. The reversal of 491457068299 is 992860754194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491457068299 - 2²⁹ = 490920197387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491457068299.

It is not a weakly prime, because it can be changed into another prime (491457068293) 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, 245728534149 + 245728534150.

It is an arithmetic number, because the mean of its divisors is an integer number (245728534150).

Almost surely, 2^491457068299 is an apocalyptic number.

491457068299 is a deficient number, since it is larger than the sum of its proper divisors (1).

491457068299 is an equidigital number, since it uses as much as digits as its factorization.

491457068299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 491457068299 in words is "four hundred ninety-one billion, four hundred fifty-seven million, sixty-eight thousand, two hundred ninety-nine".