143321321440 has 96 divisors (see below), whose sum is σ = 369460193760. Its totient is φ = 52105267200.

The previous prime is 143321321413. The next prime is 143321321461. The reversal of 143321321440 is 44123123341.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 143321321399 and 143321321408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14830210 + ... + 14839870.

It is an arithmetic number, because the mean of its divisors is an integer number (3848543685).

Almost surely, 2^143321321440 is an apocalyptic number.

143321321440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143321321440 is an abundant number, since it is smaller than the sum of its proper divisors (226138872320).

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

143321321440 is a wasteful number, since it uses less digits than its factorization.

143321321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18116 (or 18108 counting only the distinct ones).

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

Adding to 143321321440 its reverse (44123123341), we get a palindrome (187444444781).

The spelling of 143321321440 in words is "one hundred forty-three billion, three hundred twenty-one million, three hundred twenty-one thousand, four hundred forty".