674265464562491 has 2 divisors, whose sum is σ = 674265464562492. Its totient is φ = 674265464562490.

The previous prime is 674265464562433. The next prime is 674265464562541. The reversal of 674265464562491 is 194265464562476.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674265464562491 - 2⁴² = 669867418051387 is a prime.

It is not a weakly prime, because it can be changed into another prime (674265464592491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337132732281245 + 337132732281246.

It is an arithmetic number, because the mean of its divisors is an integer number (337132732281246).

Almost surely, 2^{674265464562491} is an apocalyptic number.

674265464562491 is a deficient number, since it is larger than the sum of its proper divisors (1).

674265464562491 is an equidigital number, since it uses as much as digits as its factorization.

674265464562491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2090188800, while the sum is 71.

The spelling of 674265464562491 in words is "six hundred seventy-four trillion, two hundred sixty-five billion, four hundred sixty-four million, five hundred sixty-two thousand, four hundred ninety-one".