320140143040 has 84 divisors (see below), whose sum is σ = 809814942216. Its totient is φ = 120523313152.

The previous prime is 320140143017. The next prime is 320140143053. The reversal of 320140143040 is 40341041023.

It is a super-2 number, since 2×320140143040² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1638382 + ... + 1823341.

It is an arithmetic number, because the mean of its divisors is an integer number (9640654074).

Almost surely, 2^320140143040 is an apocalyptic number.

It is an amenable number.

320140143040 is an abundant number, since it is smaller than the sum of its proper divisors (489674799176).

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

320140143040 is a wasteful number, since it uses less digits than its factorization.

320140143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461774 (or 3461747 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 320140143040 its reverse (40341041023), we get a palindrome (360481184063).

The spelling of 320140143040 in words is "three hundred twenty billion, one hundred forty million, one hundred forty-three thousand, forty".