681143500815 has 8 divisors (see below), whose sum is σ = 1089829601328. Its totient is φ = 363276533760.

The previous prime is 681143500703. The next prime is 681143500819. The reversal of 681143500815 is 518005341186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681143500815 - 2⁸ = 681143500559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681143500819) 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 7 ways as a sum of consecutive naturals, for example, 22704783346 + ... + 22704783375.

It is an arithmetic number, because the mean of its divisors is an integer number (136228700166).

Almost surely, 2^681143500815 is an apocalyptic number.

681143500815 is a deficient number, since it is larger than the sum of its proper divisors (408686100513).

681143500815 is a wasteful number, since it uses less digits than its factorization.

681143500815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45409566729.

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 681143500815 in words is "six hundred eighty-one billion, one hundred forty-three million, five hundred thousand, eight hundred fifteen".