681143322486 has 16 divisors (see below), whose sum is σ = 1486130885568. Its totient is φ = 206407067400.

The previous prime is 681143322473. The next prime is 681143322491. The reversal of 681143322486 is 684223341186.

It is a congruent number.

It is an unprimeable number.

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, 5160176620 + ... + 5160176751.

It is an arithmetic number, because the mean of its divisors is an integer number (92883180348).

Almost surely, 2^681143322486 is an apocalyptic number.

681143322486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

681143322486 is an abundant number, since it is smaller than the sum of its proper divisors (804987563082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681143322486 is a wasteful number, since it uses less digits than its factorization.

681143322486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320353387.

The product of its digits is 1327104, while the sum is 48.

The spelling of 681143322486 in words is "six hundred eighty-one billion, one hundred forty-three million, three hundred twenty-two thousand, four hundred eighty-six".