12440403330 has 32 divisors (see below), whose sum is σ = 31428388800. Its totient is φ = 3142838592.

The previous prime is 12440403319. The next prime is 12440403343. The reversal of 12440403330 is 3330404421.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12440403330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10912065 + ... + 10913204.

It is an arithmetic number, because the mean of its divisors is an integer number (982137150).

Almost surely, 2^12440403330 is an apocalyptic number.

12440403330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12440403330 is an abundant number, since it is smaller than the sum of its proper divisors (18987985470).

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

12440403330 is a wasteful number, since it uses less digits than its factorization.

12440403330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21825298.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 12440403330 its reverse (3330404421), we get a palindrome (15770807751).

The spelling of 12440403330 in words is "twelve billion, four hundred forty million, four hundred three thousand, three hundred thirty".