491465176459 has 4 divisors (see below), whose sum is σ = 504748019104. Its totient is φ = 478182333816.

The previous prime is 491465176441. The next prime is 491465176483. The reversal of 491465176459 is 954671564194.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491465176459 - 2⁹ = 491465175947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491465176397 and 491465176406.

It is not an unprimeable number, because it can be changed into a prime (491465176259) 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 in 3 ways as a sum of consecutive naturals, for example, 6641421267 + ... + 6641421340.

It is an arithmetic number, because the mean of its divisors is an integer number (126187004776).

Almost surely, 2^491465176459 is an apocalyptic number.

491465176459 is a deficient number, since it is larger than the sum of its proper divisors (13282842645).

491465176459 is a wasteful number, since it uses less digits than its factorization.

491465176459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282842644.

The product of its digits is 32659200, while the sum is 61.

The spelling of 491465176459 in words is "four hundred ninety-one billion, four hundred sixty-five million, one hundred seventy-six thousand, four hundred fifty-nine".