512715854641217 has 2 divisors, whose sum is σ = 512715854641218. Its totient is φ = 512715854641216.

The previous prime is 512715854641189. The next prime is 512715854641259. The reversal of 512715854641217 is 712146458517215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481918227348496 + 30797627292721 = 21952636^2 + 5549561^2 .

It is a cyclic number.

It is not a de Polignac number, because 512715854641217 - 2²⁸ = 512715586205761 is a prime.

It is not a weakly prime, because it can be changed into another prime (512715854641267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256357927320608 + 256357927320609.

It is an arithmetic number, because the mean of its divisors is an integer number (256357927320609).

Almost surely, 2^{512715854641217} is an apocalyptic number.

It is an amenable number.

512715854641217 is a deficient number, since it is larger than the sum of its proper divisors (1).

512715854641217 is an equidigital number, since it uses as much as digits as its factorization.

512715854641217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816000, while the sum is 59.

The spelling of 512715854641217 in words is "five hundred twelve trillion, seven hundred fifteen billion, eight hundred fifty-four million, six hundred forty-one thousand, two hundred seventeen".