12331433440440 has 96 divisors (see below), whose sum is σ = 40833331549920. Its totient is φ = 3226337297664.

The previous prime is 12331433440421. The next prime is 12331433440471. The reversal of 12331433440440 is 4404433413321.

12331433440440 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 143 + 34 + 40 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12331433440395 and 12331433440404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323131692 + ... + 323169851.

It is an arithmetic number, because the mean of its divisors is an integer number (425347203645).

Almost surely, 2^{12331433440440} is an apocalyptic number.

12331433440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331433440440 is an abundant number, since it is smaller than the sum of its proper divisors (28501898109480).

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

12331433440440 is a wasteful number, since it uses less digits than its factorization.

12331433440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646301613 (or 646301606 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 12331433440440 its reverse (4404433413321), we get a palindrome (16735866853761).

The spelling of 12331433440440 in words is "twelve trillion, three hundred thirty-one billion, four hundred thirty-three million, four hundred forty thousand, four hundred forty".