4444556666 has 16 divisors (see below), whose sum is σ = 7282941120. Its totient is φ = 2017466880.

The previous prime is 4444556651. The next prime is 4444556693. The reversal of 4444556666 is 6666554444.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122951 + ... + 154938.

It is an arithmetic number, because the mean of its divisors is an integer number (455183820).

Almost surely, 2^4444556666 is an apocalyptic number.

4444556666 is a deficient number, since it is larger than the sum of its proper divisors (2838384454).

4444556666 is a wasteful number, since it uses less digits than its factorization.

4444556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278629.

The product of its digits is 8294400, while the sum is 50.

The square root of 4444556666 is about 66667.5083230204. The cubic root of 4444556666 is about 1644.1552208783.

The spelling of 4444556666 in words is "four billion, four hundred forty-four million, five hundred fifty-six thousand, six hundred sixty-six".