2166084402889 has 8 divisors (see below), whose sum is σ = 2364781891968. Its totient is φ = 1967683701360.

The previous prime is 2166084402869. The next prime is 2166084402901. The reversal of 2166084402889 is 9882044806612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166084402889 - 2⁷ = 2166084402761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166084402869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74181622 + ... + 74210815.

It is an arithmetic number, because the mean of its divisors is an integer number (295597736496).

Almost surely, 2^{2166084402889} is an apocalyptic number.

It is an amenable number.

2166084402889 is a deficient number, since it is larger than the sum of its proper divisors (198697489079).

2166084402889 is a wasteful number, since it uses less digits than its factorization.

2166084402889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148393775.

The product of its (nonzero) digits is 10616832, while the sum is 58.

The spelling of 2166084402889 in words is "two trillion, one hundred sixty-six billion, eighty-four million, four hundred two thousand, eight hundred eighty-nine".