681143500846 has 4 divisors (see below), whose sum is σ = 1021715251272. Its totient is φ = 340571750422.

The previous prime is 681143500823. The next prime is 681143500853. The reversal of 681143500846 is 648005341186.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 681143500796 and 681143500805.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 170285875210 + ... + 170285875213.

It is an arithmetic number, because the mean of its divisors is an integer number (255428812818).

Almost surely, 2^681143500846 is an apocalyptic number.

681143500846 is a deficient number, since it is larger than the sum of its proper divisors (340571750426).

681143500846 is a wasteful number, since it uses less digits than its factorization.

681143500846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340571750425.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 681143500846 in words is "six hundred eighty-one billion, one hundred forty-three million, five hundred thousand, eight hundred forty-six".