681448844186 has 64 divisors (see below), whose sum is σ = 1144890650880. Its totient is φ = 301569116160.

The previous prime is 681448844171. The next prime is 681448844221.

681448844186 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170062595 + ... + 170066601.

It is an arithmetic number, because the mean of its divisors is an integer number (17888916420).

Almost surely, 2^681448844186 is an apocalyptic number.

681448844186 is a deficient number, since it is larger than the sum of its proper divisors (463441806694).

681448844186 is a wasteful number, since it uses less digits than its factorization.

681448844186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159.

The product of its digits is 37748736, while the sum is 62.

The spelling of 681448844186 in words is "six hundred eighty-one billion, four hundred forty-eight million, eight hundred forty-four thousand, one hundred eighty-six".