5811434820 has 72 divisors (see below), whose sum is σ = 17635264920. Its totient is φ = 1549079040.

The previous prime is 5811434807. The next prime is 5811434831. The reversal of 5811434820 is 284341185.

5811434820 is a `hidden beast` number, since 581 + 14 + 3 + 48 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 839492676 + 4971942144 = 28974^2 + 70512^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 572590 + ... + 582650.

It is an arithmetic number, because the mean of its divisors is an integer number (244934235).

Almost surely, 2^5811434820 is an apocalyptic number.

It is an amenable number.

5811434820 is an abundant number, since it is smaller than the sum of its proper divisors (11823830100).

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

5811434820 is a wasteful number, since it uses less digits than its factorization.

5811434820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13285 (or 13280 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 5811434820 is about 76232.7673641722. The cubic root of 5811434820 is about 1797.8817489477.

The spelling of 5811434820 in words is "five billion, eight hundred eleven million, four hundred thirty-four thousand, eight hundred twenty".