5681023720 has 16 divisors (see below), whose sum is σ = 12782303460. Its totient is φ = 2272409472.

The previous prime is 5681023687. The next prime is 5681023721. The reversal of 5681023720 is 273201865.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4935624516 + 745399204 = 70254^2 + 27302^2 .

It is not an unprimeable number, because it can be changed into a prime (5681023721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71012757 + ... + 71012836.

Almost surely, 2^5681023720 is an apocalyptic number.

It is an amenable number.

5681023720 is an abundant number, since it is smaller than the sum of its proper divisors (7101279740).

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

5681023720 is a wasteful number, since it uses less digits than its factorization.

5681023720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142025604 (or 142025600 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 5681023720 is about 75372.5660966906. The cubic root of 5681023720 is about 1784.3314661235.

The spelling of 5681023720 in words is "five billion, six hundred eighty-one million, twenty-three thousand, seven hundred twenty".