497445084817 has 4 divisors (see below), whose sum is σ = 497583923200. Its totient is φ = 497306246436.

The previous prime is 497445084811. The next prime is 497445084833. The reversal of 497445084817 is 718480544794.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497445084817 is a prime.

It is a super-2 number, since 2×497445084817² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497445084811) 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 in 3 ways as a sum of consecutive naturals, for example, 69413817 + ... + 69420982.

It is an arithmetic number, because the mean of its divisors is an integer number (124395980800).

Almost surely, 2^497445084817 is an apocalyptic number.

It is an amenable number.

497445084817 is a deficient number, since it is larger than the sum of its proper divisors (138838383).

497445084817 is a wasteful number, since it uses less digits than its factorization.

497445084817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138838382.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 497445084817 in words is "four hundred ninety-seven billion, four hundred forty-five million, eighty-four thousand, eight hundred seventeen".