321450140505 has 16 divisors (see below), whose sum is σ = 553883319360. Its totient is φ = 158252376768.

The previous prime is 321450140491. The next prime is 321450140513. The reversal of 321450140505 is 505041054123.

It is not a de Polignac number, because 321450140505 - 2²⁸ = 321181705049 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, 824230935 + ... + 824231324.

It is an arithmetic number, because the mean of its divisors is an integer number (34617707460).

Almost surely, 2^321450140505 is an apocalyptic number.

It is an amenable number.

321450140505 is a deficient number, since it is larger than the sum of its proper divisors (232433178855).

321450140505 is a wasteful number, since it uses less digits than its factorization.

321450140505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648462280.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 321450140505 its reverse (505041054123), we get a palindrome (826491194628).

The spelling of 321450140505 in words is "three hundred twenty-one billion, four hundred fifty million, one hundred forty thousand, five hundred five".