2113440040 has 32 divisors (see below), whose sum is σ = 4756725000. Its totient is φ = 845112064.

The previous prime is 2113440011. The next prime is 2113440041. The reversal of 2113440040 is 400443112.

It can be written as a sum of positive squares in 4 ways, for example, as 1710153316 + 403286724 = 41354^2 + 20082^2 .

It is not an unprimeable number, because it can be changed into a prime (2113440041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167886 + ... + 180034.

Almost surely, 2^2113440040 is an apocalyptic number.

2113440040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113440040 is an abundant number, since it is smaller than the sum of its proper divisors (2643284960).

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

2113440040 is a wasteful number, since it uses less digits than its factorization.

2113440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16509 (or 16505 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2113440040 is about 45972.1659267866. The cubic root of 2113440040 is about 1283.3052678782.

Adding to 2113440040 its reverse (400443112), we get a palindrome (2513883152).

The spelling of 2113440040 in words is "two billion, one hundred thirteen million, four hundred forty thousand, forty".