681619504888 has 32 divisors (see below), whose sum is σ = 1474793948160. Its totient is φ = 289286500320.

The previous prime is 681619504829. The next prime is 681619504901. The reversal of 681619504888 is 888405916186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59080528 + ... + 59092063.

It is an arithmetic number, because the mean of its divisors is an integer number (46087310880).

Almost surely, 2^681619504888 is an apocalyptic number.

It is an amenable number.

681619504888 is an abundant number, since it is smaller than the sum of its proper divisors (793174443272).

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

681619504888 is a wasteful number, since it uses less digits than its factorization.

681619504888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118172707 (or 118172703 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 681619504888 in words is "six hundred eighty-one billion, six hundred nineteen million, five hundred four thousand, eight hundred eighty-eight".