6221415536377 has 2 divisors, whose sum is σ = 6221415536378. Its totient is φ = 6221415536376.

The previous prime is 6221415536359. The next prime is 6221415536383. The reversal of 6221415536377 is 7736355141226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5571374861376 + 650040675001 = 2360376^2 + 806251^2 .

It is a cyclic number.

It is not a de Polignac number, because 6221415536377 - 2²⁷ = 6221281318649 is a prime.

It is a super-2 number, since 2×6221415536377² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6221415534377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110707768188 + 3110707768189.

It is an arithmetic number, because the mean of its divisors is an integer number (3110707768189).

Almost surely, 2^{6221415536377} is an apocalyptic number.

It is an amenable number.

6221415536377 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221415536377 is an equidigital number, since it uses as much as digits as its factorization.

6221415536377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 52.

The spelling of 6221415536377 in words is "six trillion, two hundred twenty-one billion, four hundred fifteen million, five hundred thirty-six thousand, three hundred seventy-seven".