512653356217 has 2 divisors, whose sum is σ = 512653356218. Its totient is φ = 512653356216.

The previous prime is 512653356197. The next prime is 512653356239. The reversal of 512653356217 is 712653356215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398989302336 + 113664053881 = 631656^2 + 337141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512653356217 is a prime.

It is not a weakly prime, because it can be changed into another prime (512653356287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256326678108 + 256326678109.

It is an arithmetic number, because the mean of its divisors is an integer number (256326678109).

Almost surely, 2^512653356217 is an apocalyptic number.

It is an amenable number.

512653356217 is a deficient number, since it is larger than the sum of its proper divisors (1).

512653356217 is an equidigital number, since it uses as much as digits as its factorization.

512653356217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 46.

The spelling of 512653356217 in words is "five hundred twelve billion, six hundred fifty-three million, three hundred fifty-six thousand, two hundred seventeen".