2066166140 has 24 divisors (see below), whose sum is σ = 4340099232. Its totient is φ = 826247360.

The previous prime is 2066166119. The next prime is 2066166217. The reversal of 2066166140 is 416616602.

It is a junction number, because it is equal to n+sod(n) for n = 2066166097 and 2066166106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78905 + ... + 101775.

It is an arithmetic number, because the mean of its divisors is an integer number (180837468).

Almost surely, 2^2066166140 is an apocalyptic number.

2066166140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066166140 is an abundant number, since it is smaller than the sum of its proper divisors (2273933092).

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

2066166140 is a wasteful number, since it uses less digits than its factorization.

2066166140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27397 (or 27395 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2066166140 is about 45455.1002638868. The cubic root of 2066166140 is about 1273.6646051699.

The spelling of 2066166140 in words is "two billion, sixty-six million, one hundred sixty-six thousand, one hundred forty".