497861481649 has 9 divisors (see below), whose sum is σ = 579150734457. Its totient is φ = 426734179284.

The previous prime is 497861481643. The next prime is 497861481679. The reversal of 497861481649 is 946184168794.

The square root of 497861481649 is 705593.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 497861481649 - 2¹⁵ = 497861448881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497861481643) 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 8 ways as a sum of consecutive naturals, for example, 4888752 + ... + 4989550.

Almost surely, 2^497861481649 is an apocalyptic number.

497861481649 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

497861481649 is the 705593-rd square number.

497861481649 is the 352797-th centered octagonal number.

It is an amenable number.

497861481649 is a deficient number, since it is larger than the sum of its proper divisors (81289252808).

497861481649 is an frugal number, since it uses more digits than its factorization.

497861481649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201612 (or 100806 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 67.

The spelling of 497861481649 in words is "four hundred ninety-seven billion, eight hundred sixty-one million, four hundred eighty-one thousand, six hundred forty-nine".