674475540491 has 2 divisors, whose sum is σ = 674475540492. Its totient is φ = 674475540490.

The previous prime is 674475540461. The next prime is 674475540493. The reversal of 674475540491 is 194045574476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674475540491 is a prime.

Together with 674475540493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (674475540493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337237770245 + 337237770246.

It is an arithmetic number, because the mean of its divisors is an integer number (337237770246).

Almost surely, 2^674475540491 is an apocalyptic number.

674475540491 is a deficient number, since it is larger than the sum of its proper divisors (1).

674475540491 is an equidigital number, since it uses as much as digits as its factorization.

674475540491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 674475540491 in words is "six hundred seventy-four billion, four hundred seventy-five million, five hundred forty thousand, four hundred ninety-one".