497564971922 has 6 divisors (see below), whose sum is σ = 746348954229. Its totient is φ = 248781987180.

The previous prime is 497564971907. The next prime is 497564971993. The reversal of 497564971922 is 229179465794.

It can be written as a sum of positive squares in 2 ways, for example, as 491893225201 + 5671746721 = 701351^2 + 75311^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=498781.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 748172 + ... + 1246952.

Almost surely, 2^497564971922 is an apocalyptic number.

497564971922 is a deficient number, since it is larger than the sum of its proper divisors (248783982307).

497564971922 is an frugal number, since it uses more digits than its factorization.

497564971922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997564 (or 498783 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 65.

The spelling of 497564971922 in words is "four hundred ninety-seven billion, five hundred sixty-four million, nine hundred seventy-one thousand, nine hundred twenty-two".