681097981200 has 480 divisors, whose sum is σ = 2740095456000. Its totient is φ = 143703060480.

The previous prime is 681097981181. The next prime is 681097981217. The reversal of 681097981200 is 2189790186.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5287156 + ... + 5414444.

It is an arithmetic number, because the mean of its divisors is an integer number (5708532200).

Almost surely, 2^681097981200 is an apocalyptic number.

681097981200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681097981200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370047728000).

681097981200 is an abundant number, since it is smaller than the sum of its proper divisors (2058997474800).

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

681097981200 is a wasteful number, since it uses less digits than its factorization.

681097981200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127344 (or 127319 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 51.

The spelling of 681097981200 in words is "six hundred eighty-one billion, ninety-seven million, nine hundred eighty-one thousand, two hundred".