5811539040 has 144 divisors (see below), whose sum is σ = 20206328688. Its totient is φ = 1520483328.

The previous prime is 5811539023. The next prime is 5811539077. The reversal of 5811539040 is 409351185.

5811539040 is a `hidden beast` number, since 5 + 81 + 1 + 539 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a junction number, because it is equal to n+sod(n) for n = 5811538986 and 5811539004.

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 23 ways as a sum of consecutive naturals, for example, 38247 + ... + 114393.

It is an arithmetic number, because the mean of its divisors is an integer number (140321727).

Almost surely, 2^5811539040 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 5811539040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10103164344).

5811539040 is an abundant number, since it is smaller than the sum of its proper divisors (14394789648).

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

5811539040 is a wasteful number, since it uses less digits than its factorization.

5811539040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76221 (or 76210 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 5811539040 is about 76233.4509254304. The cubic root of 5811539040 is about 1797.8924963863.

The spelling of 5811539040 in words is "five billion, eight hundred eleven million, five hundred thirty-nine thousand, forty".