16001666566660 has 96 divisors (see below), whose sum is σ = 35124753388032. Its totient is φ = 6117371043840.

The previous prime is 16001666566651. The next prime is 16001666566661. The reversal of 16001666566660 is 6666566610061.

It is not an unprimeable number, because it can be changed into a prime (16001666566661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182371600 + ... + 182459320.

It is an arithmetic number, because the mean of its divisors is an integer number (365882847792).

Almost surely, 2^{16001666566660} is an apocalyptic number.

16001666566660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16001666566660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17562376694016).

16001666566660 is an abundant number, since it is smaller than the sum of its proper divisors (19123086821372).

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

16001666566660 is a wasteful number, since it uses less digits than its factorization.

16001666566660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92333 (or 92331 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 16001666566660 in words is "sixteen trillion, one billion, six hundred sixty-six million, five hundred sixty-six thousand, six hundred sixty".