681838044700 has 36 divisors (see below), whose sum is σ = 1480646465200. Its totient is φ = 272540211840.

The previous prime is 681838044697. The next prime is 681838044737. The reversal of 681838044700 is 7440838186.

It is a happy number.

681838044700 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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2296977 + ... + 2576776.

Almost surely, 2^681838044700 is an apocalyptic number.

It is an amenable number.

681838044700 is an abundant number, since it is smaller than the sum of its proper divisors (798808420500).

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

681838044700 is a wasteful number, since it uses less digits than its factorization.

681838044700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875166 (or 4875159 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 681838044700 in words is "six hundred eighty-one billion, eight hundred thirty-eight million, forty-four thousand, seven hundred".