5666700371766 has 128 divisors (see below), whose sum is σ = 13742171873280. Its totient is φ = 1523825740800.

The previous prime is 5666700371723. The next prime is 5666700371821. The reversal of 5666700371766 is 6671730076665.

It is a happy number.

It is a super-2 number, since 2×5666700371766² (a number of 26 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 63 ways as a sum of consecutive naturals, for example, 6667720 + ... + 7469396.

It is an arithmetic number, because the mean of its divisors is an integer number (107360717760).

Almost surely, 2^{5666700371766} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5666700371766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6871085936640).

5666700371766 is an abundant number, since it is smaller than the sum of its proper divisors (8075471501514).

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

5666700371766 is a wasteful number, since it uses less digits than its factorization.

5666700371766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801870.

The product of its (nonzero) digits is 40007520, while the sum is 60.

The spelling of 5666700371766 in words is "five trillion, six hundred sixty-six billion, seven hundred million, three hundred seventy-one thousand, seven hundred sixty-six".