511675484681 has 2 divisors, whose sum is σ = 511675484682. Its totient is φ = 511675484680.

The previous prime is 511675484603. The next prime is 511675484701. The reversal of 511675484681 is 186484576115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310739353600 + 200936131081 = 557440^2 + 448259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511675484681 is a prime.

It is a super-2 number, since 2×511675484681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511675484081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255837742340 + 255837742341.

It is an arithmetic number, because the mean of its divisors is an integer number (255837742341).

Almost surely, 2^511675484681 is an apocalyptic number.

It is an amenable number.

511675484681 is a deficient number, since it is larger than the sum of its proper divisors (1).

511675484681 is an equidigital number, since it uses as much as digits as its factorization.

511675484681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6451200, while the sum is 56.

The spelling of 511675484681 in words is "five hundred eleven billion, six hundred seventy-five million, four hundred eighty-four thousand, six hundred eighty-one".