5811321888 has 192 divisors, whose sum is σ = 18058360320. Its totient is φ = 1811828736.

The previous prime is 5811321881. The next prime is 5811321889. The reversal of 5811321888 is 8881231185.

It is not an unprimeable number, because it can be changed into a prime (5811321881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2539881 + ... + 2542167.

It is an arithmetic number, because the mean of its divisors is an integer number (94053960).

Almost surely, 2^5811321888 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 5811321888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9029180160).

5811321888 is an abundant number, since it is smaller than the sum of its proper divisors (12247038432).

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

5811321888 is a wasteful number, since it uses less digits than its factorization.

5811321888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 2482 counting only the distinct ones).

The product of its digits is 122880, while the sum is 45.

The square root of 5811321888 is about 76232.0266554681. The cubic root of 5811321888 is about 1797.8701029599.

The spelling of 5811321888 in words is "five billion, eight hundred eleven million, three hundred twenty-one thousand, eight hundred eighty-eight".