6266446240421 has 2 divisors, whose sum is σ = 6266446240422. Its totient is φ = 6266446240420.

The previous prime is 6266446240363. The next prime is 6266446240423. The reversal of 6266446240421 is 1240426446626.

6266446240421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4997522844196 + 1268923396225 = 2235514^2 + 1126465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6266446240421 is a prime.

Together with 6266446240423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6266446240423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3133223120210 + 3133223120211.

It is an arithmetic number, because the mean of its divisors is an integer number (3133223120211).

Almost surely, 2^{6266446240421} is an apocalyptic number.

It is an amenable number.

6266446240421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6266446240421 is an equidigital number, since it uses as much as digits as its factorization.

6266446240421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 47.

The spelling of 6266446240421 in words is "six trillion, two hundred sixty-six billion, four hundred forty-six million, two hundred forty thousand, four hundred twenty-one".