681467708140 has 24 divisors (see below), whose sum is σ = 1433698448112. Its totient is φ = 272088747840.

The previous prime is 681467708113. The next prime is 681467708219. The reversal of 681467708140 is 41807764186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31134751 + ... + 31156630.

It is an arithmetic number, because the mean of its divisors is an integer number (59737435338).

Almost surely, 2^681467708140 is an apocalyptic number.

It is an amenable number.

681467708140 is an abundant number, since it is smaller than the sum of its proper divisors (752230739972).

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

681467708140 is a wasteful number, since it uses less digits than its factorization.

681467708140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62291937 (or 62291935 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 681467708140 in words is "six hundred eighty-one billion, four hundred sixty-seven million, seven hundred eight thousand, one hundred forty".