681434434186 has 32 divisors (see below), whose sum is σ = 1129306297536. Its totient is φ = 305807040000.

The previous prime is 681434434181. The next prime is 681434434223.

681434434186 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (681434434181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349981 + ... + 1218751.

It is an arithmetic number, because the mean of its divisors is an integer number (35290821798).

Almost surely, 2^681434434186 is an apocalyptic number.

681434434186 is a deficient number, since it is larger than the sum of its proper divisors (447871863350).

681434434186 is a wasteful number, since it uses less digits than its factorization.

681434434186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869238.

The product of its digits is 5308416, while the sum is 52.

The spelling of 681434434186 in words is "six hundred eighty-one billion, four hundred thirty-four million, four hundred thirty-four thousand, one hundred eighty-six".