5611005020 has 96 divisors (see below), whose sum is σ = 12666931200. Its totient is φ = 2082921984.

The previous prime is 5611005011. The next prime is 5611005041. The reversal of 5611005020 is 205001165.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 5611004983 and 5611005001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2142752 + ... + 2145368.

It is an arithmetic number, because the mean of its divisors is an integer number (131947200).

Almost surely, 2^5611005020 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 5611005020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6333465600).

5611005020 is an abundant number, since it is smaller than the sum of its proper divisors (7055926180).

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

5611005020 is a wasteful number, since it uses less digits than its factorization.

5611005020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5611005020 is about 74906.6420285945. The cubic root of 5611005020 is about 1776.9705043680.

Adding to 5611005020 its reverse (205001165), we get a palindrome (5816006185).

The spelling of 5611005020 in words is "five billion, six hundred eleven million, five thousand, twenty".