7681345344 has 140 divisors (see below), whose sum is σ = 22945758528. Its totient is φ = 2540678400.

The previous prime is 7681345337. The next prime is 7681345361. The reversal of 7681345344 is 4435431867.

7681345344 is a `hidden beast` number, since 7 + 6 + 81 + 34 + 534 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7681345344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 673449 + ... + 684759.

Almost surely, 2^7681345344 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 7681345344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11472879264).

7681345344 is an abundant number, since it is smaller than the sum of its proper divisors (15264413184).

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

7681345344 is a wasteful number, since it uses less digits than its factorization.

7681345344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466 (or 11447 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 7681345344 is about 87643.2846486255. The cubic root of 7681345344 is about 1973.0848577247.

The spelling of 7681345344 in words is "seven billion, six hundred eighty-one million, three hundred forty-five thousand, three hundred forty-four".