2112345440 has 48 divisors (see below), whose sum is σ = 5096613312. Its totient is φ = 826957824.

The previous prime is 2112345439. The next prime is 2112345511. The reversal of 2112345440 is 445432112.

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 7 ways as a sum of consecutive naturals, for example, 132929 + ... + 147968.

It is an arithmetic number, because the mean of its divisors is an integer number (106179444).

Almost surely, 2^2112345440 is an apocalyptic number.

2112345440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112345440 is an abundant number, since it is smaller than the sum of its proper divisors (2984267872).

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

2112345440 is a wasteful number, since it uses less digits than its factorization.

2112345440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280959 (or 280951 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2112345440 is about 45960.2593552299. The cubic root of 2112345440 is about 1283.0836783528.

Adding to 2112345440 its reverse (445432112), we get a palindrome (2557777552).

The spelling of 2112345440 in words is "two billion, one hundred twelve million, three hundred forty-five thousand, four hundred forty".