2115440144 has 20 divisors (see below), whose sum is σ = 4102933824. Its totient is φ = 1056618528.

The previous prime is 2115440113. The next prime is 2115440147. The reversal of 2115440144 is 4410445112.

It is not an unprimeable number, because it can be changed into a prime (2115440147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52892 + ... + 83835.

Almost surely, 2^2115440144 is an apocalyptic number.

It is an amenable number.

2115440144 is a deficient number, since it is larger than the sum of its proper divisors (1987493680).

2115440144 is a wasteful number, since it uses less digits than its factorization.

2115440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137702 (or 137696 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 2115440144 is about 45993.9142061208. The cubic root of 2115440144 is about 1283.7099690095.

Adding to 2115440144 its reverse (4410445112), we get a palindrome (6525885256).

The spelling of 2115440144 in words is "two billion, one hundred fifteen million, four hundred forty thousand, one hundred forty-four".