32143444322440 has 128 divisors (see below), whose sum is σ = 79081288744320. Its totient is φ = 11661335449600.

The previous prime is 32143444322419. The next prime is 32143444322447. The reversal of 32143444322440 is 4422344434123.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 32143444322393 and 32143444322402.

It is not an unprimeable number, because it can be changed into a prime (32143444322447) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 332248875 + ... + 332345605.

It is an arithmetic number, because the mean of its divisors is an integer number (617822568315).

Almost surely, 2^{32143444322440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32143444322440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39540644372160).

32143444322440 is an abundant number, since it is smaller than the sum of its proper divisors (46937844421880).

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

32143444322440 is a wasteful number, since it uses less digits than its factorization.

32143444322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98503 (or 98499 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 32143444322440 its reverse (4422344434123), we get a palindrome (36565788756563).

The spelling of 32143444322440 in words is "thirty-two trillion, one hundred forty-three billion, four hundred forty-four million, three hundred twenty-two thousand, four hundred forty".