681230578672 has 20 divisors (see below), whose sum is σ = 1508439138736. Its totient is φ = 291955962240.

The previous prime is 681230578649. The next prime is 681230578673. The reversal of 681230578672 is 276875032186.

681230578672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681230578673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3041207829 + ... + 3041208052.

Almost surely, 2^681230578672 is an apocalyptic number.

It is an amenable number.

681230578672 is an abundant number, since it is smaller than the sum of its proper divisors (827208560064).

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

681230578672 is a wasteful number, since it uses less digits than its factorization.

681230578672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082415896 (or 6082415890 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 681230578672 in words is "six hundred eighty-one billion, two hundred thirty million, five hundred seventy-eight thousand, six hundred seventy-two".