321140745546 has 16 divisors (see below), whose sum is σ = 652810696608. Its totient is φ = 105292047600.

The previous prime is 321140745539. The next prime is 321140745571. The reversal of 321140745546 is 645547041123.

It is a junction number, because it is equal to n+sod(n) for n = 321140745498 and 321140745507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438716500 + ... + 438717231.

It is an arithmetic number, because the mean of its divisors is an integer number (40800668538).

Almost surely, 2^321140745546 is an apocalyptic number.

321140745546 is an abundant number, since it is smaller than the sum of its proper divisors (331669951062).

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

321140745546 is a wasteful number, since it uses less digits than its factorization.

321140745546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877433797.

The product of its (nonzero) digits is 403200, while the sum is 42.

Adding to 321140745546 its reverse (645547041123), we get a palindrome (966687786669).

The spelling of 321140745546 in words is "three hundred twenty-one billion, one hundred forty million, seven hundred forty-five thousand, five hundred forty-six".