321645011140 has 24 divisors (see below), whose sum is σ = 675555935040. Its totient is φ = 128638687968.

The previous prime is 321645011137. The next prime is 321645011147. The reversal of 321645011140 is 41110546123.

It is a junction number, because it is equal to n+sod(n) for n = 321645011099 and 321645011108.

It is not an unprimeable number, because it can be changed into a prime (321645011147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070362 + ... + 1337521.

It is an arithmetic number, because the mean of its divisors is an integer number (28148163960).

Almost surely, 2^321645011140 is an apocalyptic number.

It is an amenable number.

321645011140 is an abundant number, since it is smaller than the sum of its proper divisors (353910923900).

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

321645011140 is a wasteful number, since it uses less digits than its factorization.

321645011140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414571 (or 2414569 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 321645011140 its reverse (41110546123), we get a palindrome (362755557263).

The spelling of 321645011140 in words is "three hundred twenty-one billion, six hundred forty-five million, eleven thousand, one hundred forty".