320400143004 has 48 divisors (see below), whose sum is σ = 776177418240. Its totient is φ = 102757437120.

The previous prime is 320400142967. The next prime is 320400143009. The reversal of 320400143004 is 400341004023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320400143009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424924 + ... + 2553635.

It is an arithmetic number, because the mean of its divisors is an integer number (16170362880).

Almost surely, 2^320400143004 is an apocalyptic number.

It is an amenable number.

320400143004 is an abundant number, since it is smaller than the sum of its proper divisors (455777275236).

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

320400143004 is a wasteful number, since it uses less digits than its factorization.

320400143004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978770 (or 4978768 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 320400143004 its reverse (400341004023), we get a palindrome (720741147027).

The spelling of 320400143004 in words is "three hundred twenty billion, four hundred million, one hundred forty-three thousand, four".