12320143143400 has 48 divisors (see below), whose sum is σ = 28644642702540. Its totient is φ = 4928003942400.

The previous prime is 12320143143391. The next prime is 12320143143493. The reversal of 12320143143400 is 434134102321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6114274962436 + 6205868180964 = 2472706^2 + 2491158^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21898422 + ... + 22453978.

Almost surely, 2^{12320143143400} is an apocalyptic number.

12320143143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320143143400 is an abundant number, since it is smaller than the sum of its proper divisors (16324499559140).

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

12320143143400 is a wasteful number, since it uses less digits than its factorization.

12320143143400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666454 (or 666445 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 12320143143400 its reverse (434134102321), we get a palindrome (12754277245721).

The spelling of 12320143143400 in words is "twelve trillion, three hundred twenty billion, one hundred forty-three million, one hundred forty-three thousand, four hundred".