2066041861 has 16 divisors (see below), whose sum is σ = 2324327040. Its totient is φ = 1822138560.

The previous prime is 2066041847. The next prime is 2066041937. The reversal of 2066041861 is 1681406602.

It is a cyclic number.

It is not a de Polignac number, because 2066041861 - 2¹¹ = 2066039813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066041661) 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, 301291 + ... + 308071.

It is an arithmetic number, because the mean of its divisors is an integer number (145270440).

Almost surely, 2^2066041861 is an apocalyptic number.

It is an amenable number.

2066041861 is a deficient number, since it is larger than the sum of its proper divisors (258285179).

2066041861 is a wasteful number, since it uses less digits than its factorization.

2066041861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 2066041861 is about 45453.7331910152. The cubic root of 2066041861 is about 1273.6390678661.

The spelling of 2066041861 in words is "two billion, sixty-six million, forty-one thousand, eight hundred sixty-one".