531116077469 has 2 divisors, whose sum is σ = 531116077470. Its totient is φ = 531116077468.

The previous prime is 531116077447. The next prime is 531116077493. The reversal of 531116077469 is 964770611135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529991280025 + 1124797444 = 728005^2 + 33538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531116077469 is a prime.

It is a super-2 number, since 2×531116077469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531116077439) 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, 265558038734 + 265558038735.

It is an arithmetic number, because the mean of its divisors is an integer number (265558038735).

Almost surely, 2^531116077469 is an apocalyptic number.

It is an amenable number.

531116077469 is a deficient number, since it is larger than the sum of its proper divisors (1).

531116077469 is an equidigital number, since it uses as much as digits as its factorization.

531116077469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 531116077469 in words is "five hundred thirty-one billion, one hundred sixteen million, seventy-seven thousand, four hundred sixty-nine".