444405543340566 has 32 divisors (see below), whose sum is σ = 929298894128640. Its totient is φ = 141412822193984.

The previous prime is 444405543340541. The next prime is 444405543340573. The reversal of 444405543340566 is 665043345504444.

It is a super-2 number, since 2×444405543340566² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3201053871 + ... + 3201192698.

It is an arithmetic number, because the mean of its divisors is an integer number (29040590441520).

Almost surely, 2^{444405543340566} is an apocalyptic number.

444405543340566 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

444405543340566 is an abundant number, since it is smaller than the sum of its proper divisors (484893350788074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444405543340566 is a wasteful number, since it uses less digits than its factorization.

444405543340566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402247100.

The product of its (nonzero) digits is 165888000, while the sum is 57.

The spelling of 444405543340566 in words is "four hundred forty-four trillion, four hundred five billion, five hundred forty-three million, three hundred forty thousand, five hundred sixty-six".