5681613312 has 120 divisors (see below), whose sum is σ = 16431180480. Its totient is φ = 1889986560.

The previous prime is 5681613281. The next prime is 5681613313. The reversal of 5681613312 is 2133161865.

5681613312 is a `hidden beast` number, since 5 + 6 + 8 + 1 + 613 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5681613313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3035737 + ... + 3037607.

It is an arithmetic number, because the mean of its divisors is an integer number (136926504).

Almost surely, 2^5681613312 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 5681613312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8215590240).

5681613312 is an abundant number, since it is smaller than the sum of its proper divisors (10749567168).

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

5681613312 is a wasteful number, since it uses less digits than its factorization.

5681613312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2535 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 5681613312 is about 75376.4771795552. The cubic root of 5681613312 is about 1784.3931915694.

The spelling of 5681613312 in words is "five billion, six hundred eighty-one million, six hundred thirteen thousand, three hundred twelve".