6441773566 has 16 divisors (see below), whose sum is σ = 10175189760. Its totient is φ = 3050175960.

The previous prime is 6441773549. The next prime is 6441773609. The reversal of 6441773566 is 6653771446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69765 + ... + 133231.

It is an arithmetic number, because the mean of its divisors is an integer number (635949360).

Almost surely, 2^6441773566 is an apocalyptic number.

6441773566 is a deficient number, since it is larger than the sum of its proper divisors (3733416194).

6441773566 is a wasteful number, since it uses less digits than its factorization.

6441773566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66159.

The product of its digits is 2540160, while the sum is 49.

The square root of 6441773566 is about 80260.6601393235. The cubic root of 6441773566 is about 1860.6662705371. Note that the first 3 decimals are identical.

The spelling of 6441773566 in words is "six billion, four hundred forty-one million, seven hundred seventy-three thousand, five hundred sixty-six".