12440270144 has 56 divisors (see below), whose sum is σ = 25351727808. Its totient is φ = 6053483520.

The previous prime is 12440270131. The next prime is 12440270177. The reversal of 12440270144 is 44107204421.

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, 765269 + ... + 781355.

Almost surely, 2^12440270144 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 12440270144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12675863904).

12440270144 is an abundant number, since it is smaller than the sum of its proper divisors (12911457664).

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

12440270144 is a wasteful number, since it uses less digits than its factorization.

12440270144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16423 (or 16413 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

Adding to 12440270144 its reverse (44107204421), we get a palindrome (56547474565).

The spelling of 12440270144 in words is "twelve billion, four hundred forty million, two hundred seventy thousand, one hundred forty-four".