2105411580 has 144 divisors (see below), whose sum is σ = 6919776864. Its totient is φ = 516096000.

The previous prime is 2105411579. The next prime is 2105411587. The reversal of 2105411580 is 851145012.

2105411580 is a `hidden beast` number, since 21 + 0 + 54 + 11 + 580 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105411587) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123580 + ... + 139580.

It is an arithmetic number, because the mean of its divisors is an integer number (48054006).

Almost surely, 2^2105411580 is an apocalyptic number.

2105411580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105411580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459888432).

2105411580 is an abundant number, since it is smaller than the sum of its proper divisors (4814365284).

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

2105411580 is a wasteful number, since it uses less digits than its factorization.

2105411580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16076 (or 16071 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 2105411580 is about 45884.7641380012. The cubic root of 2105411580 is about 1281.6782145755.

Adding to 2105411580 its reverse (851145012), we get a palindrome (2956556592).

The spelling of 2105411580 in words is "two billion, one hundred five million, four hundred eleven thousand, five hundred eighty".