321289156855264 has 24 divisors (see below), whose sum is σ = 681194798910360. Its totient is φ = 148287303163776.

The previous prime is 321289156855241. The next prime is 321289156855267. The reversal of 321289156855264 is 462558651982123.

It is a self number, because there is not a number n which added to its sum of digits gives 321289156855264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321289156855267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386164851574 + ... + 386164852405.

It is an arithmetic number, because the mean of its divisors is an integer number (28383116621265).

Almost surely, 2^{321289156855264} is an apocalyptic number.

It is an amenable number.

321289156855264 is an abundant number, since it is smaller than the sum of its proper divisors (359905642055096).

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

321289156855264 is a wasteful number, since it uses less digits than its factorization.

321289156855264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772329704002 (or 772329703994 counting only the distinct ones).

The product of its digits is 248832000, while the sum is 67.

The spelling of 321289156855264 in words is "three hundred twenty-one trillion, two hundred eighty-nine billion, one hundred fifty-six million, eight hundred fifty-five thousand, two hundred sixty-four".