681241284672 has 112 divisors (see below), whose sum is σ = 2003717356032. Its totient is φ = 202850979840.

The previous prime is 681241284653. The next prime is 681241284697. The reversal of 681241284672 is 276482142186.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4324773 + ... + 4479524.

It is an arithmetic number, because the mean of its divisors is an integer number (17890333536).

Almost surely, 2^681241284672 is an apocalyptic number.

681241284672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

681241284672 is an abundant number, since it is smaller than the sum of its proper divisors (1322476071360).

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

681241284672 is a wasteful number, since it uses less digits than its factorization.

681241284672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804356 (or 8804346 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The spelling of 681241284672 in words is "six hundred eighty-one billion, two hundred forty-one million, two hundred eighty-four thousand, six hundred seventy-two".