12400340244 has 48 divisors (see below), whose sum is σ = 30209464320. Its totient is φ = 3951462240.

The previous prime is 12400340237. The next prime is 12400340327. The reversal of 12400340244 is 44204300421.

It is a happy number.

It is a congruent number.

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, 506649 + ... + 530559.

It is an arithmetic number, because the mean of its divisors is an integer number (629363840).

Almost surely, 2^12400340244 is an apocalyptic number.

It is an amenable number.

12400340244 is an abundant number, since it is smaller than the sum of its proper divisors (17809124076).

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

12400340244 is a wasteful number, since it uses less digits than its factorization.

12400340244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25820 (or 25818 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 12400340244 its reverse (44204300421), we get a palindrome (56604640665).

The spelling of 12400340244 in words is "twelve billion, four hundred million, three hundred forty thousand, two hundred forty-four".