6221415536647 has 2 divisors, whose sum is σ = 6221415536648. Its totient is φ = 6221415536646.

The previous prime is 6221415536537. The next prime is 6221415536681. The reversal of 6221415536647 is 7466355141226.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6221415536647 is a prime.

It is a super-2 number, since 2×6221415536647² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6221415536594 and 6221415536603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6221415530647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110707768323 + 3110707768324.

It is an arithmetic number, because the mean of its divisors is an integer number (3110707768324).

Almost surely, 2^{6221415536647} is an apocalyptic number.

6221415536647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221415536647 is an equidigital number, since it uses as much as digits as its factorization.

6221415536647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 52.

The spelling of 6221415536647 in words is "six trillion, two hundred twenty-one billion, four hundred fifteen million, five hundred thirty-six thousand, six hundred forty-seven".