320143502355 has 16 divisors (see below), whose sum is σ = 513256128000. Its totient is φ = 170401026528.

The previous prime is 320143502297. The next prime is 320143502377. The reversal of 320143502355 is 553205341023.

It is not a de Polignac number, because 320143502355 - 2¹¹ = 320143500307 is a prime.

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, 21378187 + ... + 21393156.

It is an arithmetic number, because the mean of its divisors is an integer number (32078508000).

Almost surely, 2^320143502355 is an apocalyptic number.

320143502355 is a deficient number, since it is larger than the sum of its proper divisors (193112625645).

320143502355 is a wasteful number, since it uses less digits than its factorization.

320143502355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42771850.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 320143502355 its reverse (553205341023), we get a palindrome (873348843378).

The spelling of 320143502355 in words is "three hundred twenty billion, one hundred forty-three million, five hundred two thousand, three hundred fifty-five".