681478060000 has 120 divisors (see below), whose sum is σ = 1685913241320. Its totient is φ = 271066944000.

The previous prime is 681478059967. The next prime is 681478060001. The reversal of 681478060000 is 60874186.

It is a super-2 number, since 2×681478060000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681478060001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3484822 + ... + 3675178.

It is an arithmetic number, because the mean of its divisors is an integer number (14049277011).

Almost surely, 2^681478060000 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 681478060000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842956620660).

681478060000 is an abundant number, since it is smaller than the sum of its proper divisors (1004435181320).

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

681478060000 is a wasteful number, since it uses less digits than its factorization.

681478060000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190566 (or 190543 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 681478060000 in words is "six hundred eighty-one billion, four hundred seventy-eight million, sixty thousand".