2013544566 has 96 divisors (see below), whose sum is σ = 5125161600. Its totient is φ = 564483840.

The previous prime is 2013544543. The next prime is 2013544567. The reversal of 2013544566 is 6654453102.

2013544566 is a `hidden beast` number, since 20 + 1 + 35 + 44 + 566 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013544566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013544567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193525 + ... + 203663.

It is an arithmetic number, because the mean of its divisors is an integer number (53387100).

Almost surely, 2^2013544566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2013544566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2562580800).

2013544566 is an abundant number, since it is smaller than the sum of its proper divisors (3111617034).

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

2013544566 is a wasteful number, since it uses less digits than its factorization.

2013544566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234 (or 10231 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2013544566 is about 44872.5368794767. The cubic root of 2013544566 is about 1262.7588340466.

Adding to 2013544566 its reverse (6654453102), we get a palindrome (8667997668).

The spelling of 2013544566 in words is "two billion, thirteen million, five hundred forty-four thousand, five hundred sixty-six".