2166084323789 has 16 divisors (see below), whose sum is σ = 2195293104000. Its totient is φ = 2137047706944.

The previous prime is 2166084323783. The next prime is 2166084323813. The reversal of 2166084323789 is 9873234806612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166084323789 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 (2166084323783) 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, 83947112 + ... + 83972910.

It is an arithmetic number, because the mean of its divisors is an integer number (137205819000).

Almost surely, 2^{2166084323789} is an apocalyptic number.

It is an amenable number.

2166084323789 is a deficient number, since it is larger than the sum of its proper divisors (29208780211).

2166084323789 is a wasteful number, since it uses less digits than its factorization.

2166084323789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29092.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 2166084323789 in words is "two trillion, one hundred sixty-six billion, eighty-four million, three hundred twenty-three thousand, seven hundred eighty-nine".