12400340004 has 96 divisors (see below), whose sum is σ = 34886839680. Its totient is φ = 3786307200.

The previous prime is 12400340003. The next prime is 12400340033. The reversal of 12400340004 is 40004300421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12400340003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150214 + ... + 217634.

It is an arithmetic number, because the mean of its divisors is an integer number (363404580).

Almost surely, 2^12400340004 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 12400340004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17443419840).

12400340004 is an abundant number, since it is smaller than the sum of its proper divisors (22486499676).

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

12400340004 is a wasteful number, since it uses less digits than its factorization.

12400340004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67578 (or 67570 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 12400340004 its reverse (40004300421), we get a palindrome (52404640425).

The spelling of 12400340004 in words is "twelve billion, four hundred million, three hundred forty thousand, four".