512222505245491 has 2 divisors, whose sum is σ = 512222505245492. Its totient is φ = 512222505245490.

The previous prime is 512222505245489. The next prime is 512222505245573. The reversal of 512222505245491 is 194542505222215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 512222505245491 - 2¹ = 512222505245489 is a prime.

Together with 512222505245489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (512222505245461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256111252622745 + 256111252622746.

It is an arithmetic number, because the mean of its divisors is an integer number (256111252622746).

Almost surely, 2^{512222505245491} is an apocalyptic number.

512222505245491 is a deficient number, since it is larger than the sum of its proper divisors (1).

512222505245491 is an equidigital number, since it uses as much as digits as its factorization.

512222505245491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 512222505245491 in words is "five hundred twelve trillion, two hundred twenty-two billion, five hundred five million, two hundred forty-five thousand, four hundred ninety-one".