497388778462969 has 2 divisors, whose sum is σ = 497388778462970. Its totient is φ = 497388778462968.

The previous prime is 497388778462943. The next prime is 497388778462987. The reversal of 497388778462969 is 969264877883794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 482203829539600 + 15184948923369 = 21959140^2 + 3896787^2 .

It is a cyclic number.

It is not a de Polignac number, because 497388778462969 - 2⁵ = 497388778462937 is a prime.

It is a super-2 number, since 2×497388778462969² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (497388778466969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248694389231484 + 248694389231485.

It is an arithmetic number, because the mean of its divisors is an integer number (248694389231485).

Almost surely, 2^{497388778462969} is an apocalyptic number.

It is an amenable number.

497388778462969 is a deficient number, since it is larger than the sum of its proper divisors (1).

497388778462969 is an equidigital number, since it uses as much as digits as its factorization.

497388778462969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442451165184, while the sum is 97.

The spelling of 497388778462969 in words is "four hundred ninety-seven trillion, three hundred eighty-eight billion, seven hundred seventy-eight million, four hundred sixty-two thousand, nine hundred sixty-nine".