497667780769 has 4 divisors (see below), whose sum is σ = 498232671300. Its totient is φ = 497102890240.

The previous prime is 497667780733. The next prime is 497667780793. The reversal of 497667780769 is 967087766794.

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

It can be written as a sum of positive squares in 2 ways, for example, as 308455830544 + 189211950225 = 555388^2 + 434985^2 .

It is a cyclic number.

It is not a de Polignac number, because 497667780769 - 2²⁵ = 497634226337 is a prime.

It is a super-2 number, since 2×497667780769² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 497667780695 and 497667780704.

It is not an unprimeable number, because it can be changed into a prime (497667480769) 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, 282443944 + ... + 282445705.

It is an arithmetic number, because the mean of its divisors is an integer number (124558167825).

Almost surely, 2^497667780769 is an apocalyptic number.

It is an amenable number.

497667780769 is a deficient number, since it is larger than the sum of its proper divisors (564890531).

497667780769 is an equidigital number, since it uses as much as digits as its factorization.

497667780769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564890530.

The product of its (nonzero) digits is 1344252672, while the sum is 76.

The spelling of 497667780769 in words is "four hundred ninety-seven billion, six hundred sixty-seven million, seven hundred eighty thousand, seven hundred sixty-nine".