4481549837666 has 16 divisors (see below), whose sum is σ = 7652290632768. Its totient is φ = 1948499929200.

The previous prime is 4481549837663. The next prime is 4481549837669. The reversal of 4481549837666 is 6667389451844.

It is an interprime number because it is at equal distance from previous prime (4481549837663) and next prime (4481549837669).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4481549837666.

It is not an unprimeable number, because it can be changed into a prime (4481549837663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428408425 + ... + 4428409436.

It is an arithmetic number, because the mean of its divisors is an integer number (478268164548).

Almost surely, 2^{4481549837666} is an apocalyptic number.

4481549837666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4481549837666 is a deficient number, since it is larger than the sum of its proper divisors (3170740795102).

4481549837666 is a wasteful number, since it uses less digits than its factorization.

4481549837666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8856817897.

The product of its digits is 836075520, while the sum is 71.

The spelling of 4481549837666 in words is "four trillion, four hundred eighty-one billion, five hundred forty-nine million, eight hundred thirty-seven thousand, six hundred sixty-six".