6244644454663 has 2 divisors, whose sum is σ = 6244644454664. Its totient is φ = 6244644454662.

The previous prime is 6244644454621. The next prime is 6244644454667. The reversal of 6244644454663 is 3664544464426.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6244644454663 - 2³³ = 6236054520071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6244644454598 and 6244644454607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6244644454667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3122322227331 + 3122322227332.

It is an arithmetic number, because the mean of its divisors is an integer number (3122322227332).

Almost surely, 2^{6244644454663} is an apocalyptic number.

6244644454663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6244644454663 is an equidigital number, since it uses as much as digits as its factorization.

6244644454663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 159252480, while the sum is 58.

The spelling of 6244644454663 in words is "six trillion, two hundred forty-four billion, six hundred forty-four million, four hundred fifty-four thousand, six hundred sixty-three".