5666411780 has 48 divisors (see below), whose sum is σ = 12619514880. Its totient is φ = 2129837568.

The previous prime is 5666411771. The next prime is 5666411783. The reversal of 5666411780 is 871146665.

It is not an unprimeable number, because it can be changed into a prime (5666411783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205661 + ... + 231579.

It is an arithmetic number, because the mean of its divisors is an integer number (262906560).

Almost surely, 2^5666411780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5666411780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6309757440).

5666411780 is an abundant number, since it is smaller than the sum of its proper divisors (6953103100).

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

5666411780 is a wasteful number, since it uses less digits than its factorization.

5666411780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26588 (or 26586 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 5666411780 is about 75275.5722661741. The cubic root of 5666411780 is about 1782.8003494916.

The spelling of 5666411780 in words is "five billion, six hundred sixty-six million, four hundred eleven thousand, seven hundred eighty".