2111045520 has 80 divisors (see below), whose sum is σ = 6573240000. Its totient is φ = 560451072.

The previous prime is 2111045477. The next prime is 2111045527. The reversal of 2111045520 is 255401112.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2111045527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35106 + ... + 73854.

It is an arithmetic number, because the mean of its divisors is an integer number (82165500).

Almost surely, 2^2111045520 is an apocalyptic number.

2111045520 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 2111045520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3286620000).

2111045520 is an abundant number, since it is smaller than the sum of its proper divisors (4462194480).

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

2111045520 is a wasteful number, since it uses less digits than its factorization.

2111045520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38992 (or 38986 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2111045520 is about 45946.1153961899. The cubic root of 2111045520 is about 1282.8204246319.

Adding to 2111045520 its reverse (255401112), we get a palindrome (2366446632).

The spelling of 2111045520 in words is "two billion, one hundred eleven million, forty-five thousand, five hundred twenty".