511246201117 has 2 divisors, whose sum is σ = 511246201118. Its totient is φ = 511246201116.

The previous prime is 511246201097. The next prime is 511246201129. The reversal of 511246201117 is 711102642115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375988486041 + 135257715076 = 613179^2 + 367774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511246201117 is a prime.

It is a super-2 number, since 2×511246201117² (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 (511246201217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255623100558 + 255623100559.

It is an arithmetic number, because the mean of its divisors is an integer number (255623100559).

Almost surely, 2^511246201117 is an apocalyptic number.

It is an amenable number.

511246201117 is a deficient number, since it is larger than the sum of its proper divisors (1).

511246201117 is an equidigital number, since it uses as much as digits as its factorization.

511246201117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 511246201117 in words is "five hundred eleven billion, two hundred forty-six million, two hundred one thousand, one hundred seventeen".