681346734008 has 8 divisors (see below), whose sum is σ = 1277525126280. Its totient is φ = 340673367000.

The previous prime is 681346734001. The next prime is 681346734023. The reversal of 681346734008 is 800437643186.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681346734001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42584170868 + ... + 42584170883.

It is an arithmetic number, because the mean of its divisors is an integer number (159690640785).

Almost surely, 2^681346734008 is an apocalyptic number.

It is an amenable number.

681346734008 is a deficient number, since it is larger than the sum of its proper divisors (596178392272).

681346734008 is a wasteful number, since it uses less digits than its factorization.

681346734008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85168341757 (or 85168341753 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 681346734008 in words is "six hundred eighty-one billion, three hundred forty-six million, seven hundred thirty-four thousand, eight".