681919285248 has 480 divisors, whose sum is σ = 2199046449600. Its totient is φ = 209892114432.

The previous prime is 681919285217. The next prime is 681919285259. The reversal of 681919285248 is 842582919186.

681919285248 is a `hidden beast` number, since 6 + 8 + 19 + 1 + 92 + 8 + 524 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 110644215 + ... + 110650377.

It is an arithmetic number, because the mean of its divisors is an integer number (4581346770).

Almost surely, 2^681919285248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681919285248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099523224800).

681919285248 is an abundant number, since it is smaller than the sum of its proper divisors (1517127164352).

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

681919285248 is a wasteful number, since it uses less digits than its factorization.

681919285248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249 (or 6220 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 681919285248 in words is "six hundred eighty-one billion, nine hundred nineteen million, two hundred eighty-five thousand, two hundred forty-eight".