2186686720684 has 12 divisors (see below), whose sum is σ = 3843125375544. Its totient is φ = 1088650899104.

The previous prime is 2186686720681. The next prime is 2186686720717. The reversal of 2186686720684 is 4860276866812.

It is not an unprimeable number, because it can be changed into a prime (2186686720681) 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 3 ways as a sum of consecutive naturals, for example, 1173114262 + ... + 1173116125.

It is an arithmetic number, because the mean of its divisors is an integer number (320260447962).

Almost surely, 2^{2186686720684} is an apocalyptic number.

It is an amenable number.

2186686720684 is a deficient number, since it is larger than the sum of its proper divisors (1656438654860).

2186686720684 is a wasteful number, since it uses less digits than its factorization.

2186686720684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346230624 (or 2346230622 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 2186686720684 in words is "two trillion, one hundred eighty-six billion, six hundred eighty-six million, seven hundred twenty thousand, six hundred eighty-four".