12320200420440 has 64 divisors (see below), whose sum is σ = 40320655925760. Its totient is φ = 2986715253120.

The previous prime is 12320200420439. The next prime is 12320200420441. The reversal of 12320200420440 is 4402400202321.

It is an interprime number because it is at equal distance from previous prime (12320200420439) and next prime (12320200420441).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12320200420440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320200420441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4666741264 + ... + 4666743903.

It is an arithmetic number, because the mean of its divisors is an integer number (630010248840).

Almost surely, 2^{12320200420440} is an apocalyptic number.

12320200420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320200420440 is an abundant number, since it is smaller than the sum of its proper divisors (28000455505320).

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

12320200420440 is a wasteful number, since it uses less digits than its factorization.

12320200420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333485192 (or 9333485188 counting only the distinct ones).

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

Adding to 12320200420440 its reverse (4402400202321), we get a palindrome (16722600622761).

The spelling of 12320200420440 in words is "twelve trillion, three hundred twenty billion, two hundred million, four hundred twenty thousand, four hundred forty".