2011044564 has 48 divisors (see below), whose sum is σ = 5222663040. Its totient is φ = 669211200.

The previous prime is 2011044533. The next prime is 2011044577. The reversal of 2011044564 is 4654401102.

2011044564 is a `hidden beast` number, since 201 + 1 + 0 + 4 + 456 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49417 + ... + 80399.

It is an arithmetic number, because the mean of its divisors is an integer number (108805480).

Almost surely, 2^2011044564 is an apocalyptic number.

It is an amenable number.

2011044564 is an abundant number, since it is smaller than the sum of its proper divisors (3211618476).

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

2011044564 is a wasteful number, since it uses less digits than its factorization.

2011044564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31597 (or 31589 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2011044564 is about 44844.6715229357. The cubic root of 2011044564 is about 1262.2360069397.

Adding to 2011044564 its reverse (4654401102), we get a palindrome (6665445666).

The spelling of 2011044564 in words is "two billion, eleven million, forty-four thousand, five hundred sixty-four".