681341473340 has 24 divisors (see below), whose sum is σ = 1560891375792. Its totient is φ = 247760535680.

The previous prime is 681341473271. The next prime is 681341473343. The reversal of 681341473340 is 43374143186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 681341473291 and 681341473300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681341473343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548503129 + ... + 1548503568.

It is an arithmetic number, because the mean of its divisors is an integer number (65037140658).

Almost surely, 2^681341473340 is an apocalyptic number.

It is an amenable number.

681341473340 is an abundant number, since it is smaller than the sum of its proper divisors (879549902452).

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

681341473340 is a wasteful number, since it uses less digits than its factorization.

681341473340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097006717 (or 3097006715 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 681341473340 in words is "six hundred eighty-one billion, three hundred forty-one million, four hundred seventy-three thousand, three hundred forty".