491445037067 has 2 divisors, whose sum is σ = 491445037068. Its totient is φ = 491445037066.

The previous prime is 491445037043. The next prime is 491445037087. The reversal of 491445037067 is 760730544194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491445037067 - 2¹⁶ = 491444971531 is a prime.

It is not a weakly prime, because it can be changed into another prime (491445037087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245722518533 + 245722518534.

It is an arithmetic number, because the mean of its divisors is an integer number (245722518534).

Almost surely, 2^491445037067 is an apocalyptic number.

491445037067 is a deficient number, since it is larger than the sum of its proper divisors (1).

491445037067 is an equidigital number, since it uses as much as digits as its factorization.

491445037067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 491445037067 in words is "four hundred ninety-one billion, four hundred forty-five million, thirty-seven thousand, sixty-seven".