512201217361 has 4 divisors (see below), whose sum is σ = 512285982832. Its totient is φ = 512116451892.

The previous prime is 512201217323. The next prime is 512201217377. The reversal of 512201217361 is 163712102215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163712102215 = 5 ⋅32742420443.

It is a cyclic number.

It is not a de Polignac number, because 512201217361 - 2¹⁷ = 512201086289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512201217961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42373671 + ... + 42385756.

It is an arithmetic number, because the mean of its divisors is an integer number (128071495708).

Almost surely, 2^512201217361 is an apocalyptic number.

It is an amenable number.

512201217361 is a deficient number, since it is larger than the sum of its proper divisors (84765471).

512201217361 is an equidigital number, since it uses as much as digits as its factorization.

512201217361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84765470.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 512201217361 its reverse (163712102215), we get a palindrome (675913319576).

The spelling of 512201217361 in words is "five hundred twelve billion, two hundred one million, two hundred seventeen thousand, three hundred sixty-one".