681878000878186 has 64 divisors (see below), whose sum is σ = 1246335797790720. Its totient is φ = 273285538822080.

The previous prime is 681878000878183. The next prime is 681878000878201.

It is a happy number.

681878000878186 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (681878000878183) by changing a digit.

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, 12998355 + ... + 39149881.

It is an arithmetic number, because the mean of its divisors is an integer number (19473996840480).

Almost surely, 2^{681878000878186} is an apocalyptic number.

681878000878186 is a deficient number, since it is larger than the sum of its proper divisors (564457796912534).

681878000878186 is a wasteful number, since it uses less digits than its factorization.

681878000878186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26152819.

The product of its (nonzero) digits is 462422016, while the sum is 76.

The spelling of 681878000878186 in words is "six hundred eighty-one trillion, eight hundred seventy-eight billion, eight hundred seventy-eight thousand, one hundred eighty-six".