500221416647 has 2 divisors, whose sum is σ = 500221416648. Its totient is φ = 500221416646.

The previous prime is 500221416623. The next prime is 500221416649. The reversal of 500221416647 is 746614122005.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500221416647 is a prime.

Together with 500221416649, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 500221416647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500221416649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250110708323 + 250110708324.

It is an arithmetic number, because the mean of its divisors is an integer number (250110708324).

Almost surely, 2^500221416647 is an apocalyptic number.

500221416647 is a deficient number, since it is larger than the sum of its proper divisors (1).

500221416647 is an equidigital number, since it uses as much as digits as its factorization.

500221416647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 500221416647 in words is "five hundred billion, two hundred twenty-one million, four hundred sixteen thousand, six hundred forty-seven".