2113144544 has 48 divisors (see below), whose sum is σ = 4779565056. Its totient is φ = 900873600.

The previous prime is 2113144541. The next prime is 2113144567. The reversal of 2113144544 is 4454413112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113144541) 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, 18089 + ... + 67479.

It is an arithmetic number, because the mean of its divisors is an integer number (99574272).

Almost surely, 2^2113144544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113144544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2389782528).

2113144544 is an abundant number, since it is smaller than the sum of its proper divisors (2666420512).

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

2113144544 is a wasteful number, since it uses less digits than its factorization.

2113144544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49599 (or 49591 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 2113144544 is about 45968.9519567284. The cubic root of 2113144544 is about 1283.2454555594.

Adding to 2113144544 its reverse (4454413112), we get a palindrome (6567557656).

The spelling of 2113144544 in words is "two billion, one hundred thirteen million, one hundred forty-four thousand, five hundred forty-four".