512346615217 has 2 divisors, whose sum is σ = 512346615218. Its totient is φ = 512346615216.

The previous prime is 512346615103. The next prime is 512346615233. The reversal of 512346615217 is 712516643215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500936957361 + 11409657856 = 707769^2 + 106816^2 .

It is a cyclic number.

It is not a de Polignac number, because 512346615217 - 2³⁵ = 477986876849 is a prime.

It is not a weakly prime, because it can be changed into another prime (512346615817) 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, 256173307608 + 256173307609.

It is an arithmetic number, because the mean of its divisors is an integer number (256173307609).

Almost surely, 2^512346615217 is an apocalyptic number.

It is an amenable number.

512346615217 is a deficient number, since it is larger than the sum of its proper divisors (1).

512346615217 is an equidigital number, since it uses as much as digits as its factorization.

512346615217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The spelling of 512346615217 in words is "five hundred twelve billion, three hundred forty-six million, six hundred fifteen thousand, two hundred seventeen".