201343440012 has 144 divisors (see below), whose sum is σ = 556462126080. Its totient is φ = 56284778880.

The previous prime is 201343439953. The next prime is 201343440031. The reversal of 201343440012 is 210044343102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51321883 + ... + 51325805.

It is an arithmetic number, because the mean of its divisors is an integer number (3864320320).

Almost surely, 2^201343440012 is an apocalyptic number.

201343440012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201343440012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278231063040).

201343440012 is an abundant number, since it is smaller than the sum of its proper divisors (355118686068).

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

201343440012 is a wasteful number, since it uses less digits than its factorization.

201343440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684 (or 6671 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 201343440012 its reverse (210044343102), we get a palindrome (411387783114).

The spelling of 201343440012 in words is "two hundred one billion, three hundred forty-three million, four hundred forty thousand, twelve".