491316077267 has 2 divisors, whose sum is σ = 491316077268. Its totient is φ = 491316077266.

The previous prime is 491316077221. The next prime is 491316077281. The reversal of 491316077267 is 762770613194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491316077267 - 2⁸ = 491316077011 is a prime.

It is not a weakly prime, because it can be changed into another prime (491316077207) 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, 245658038633 + 245658038634.

It is an arithmetic number, because the mean of its divisors is an integer number (245658038634).

Almost surely, 2^491316077267 is an apocalyptic number.

491316077267 is a deficient number, since it is larger than the sum of its proper divisors (1).

491316077267 is an equidigital number, since it uses as much as digits as its factorization.

491316077267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The spelling of 491316077267 in words is "four hundred ninety-one billion, three hundred sixteen million, seventy-seven thousand, two hundred sixty-seven".