497788887797 has 2 divisors, whose sum is σ = 497788887798. Its totient is φ = 497788887796.

The previous prime is 497788887781. The next prime is 497788887803. The reversal of 497788887797 is 797788887794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380924730481 + 116864157316 = 617191^2 + 341854^2 .

It is a cyclic number.

It is not a de Polignac number, because 497788887797 - 2⁴ = 497788887781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497788587797) 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 as a sum of consecutive naturals, namely, 248894443898 + 248894443899.

It is an arithmetic number, because the mean of its divisors is an integer number (248894443899).

Almost surely, 2^497788887797 is an apocalyptic number.

It is an amenable number.

497788887797 is a deficient number, since it is larger than the sum of its proper divisors (1).

497788887797 is an equidigital number, since it uses as much as digits as its factorization.

497788887797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22304636928, while the sum is 89.

The spelling of 497788887797 in words is "four hundred ninety-seven billion, seven hundred eighty-eight million, eight hundred eighty-seven thousand, seven hundred ninety-seven".