321780089484 has 384 divisors, whose sum is σ = 982646784000. Its totient is φ = 89179211520.

The previous prime is 321780089483. The next prime is 321780089489. The reversal of 321780089484 is 484980087123.

It is a happy number.

321780089484 is a `hidden beast` number, since 3 + 2 + 1 + 7 + 80 + 0 + 89 + 484 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 321780089484.

It is not an unprimeable number, because it can be changed into a prime (321780089483) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1187380269 + ... + 1187380539.

It is an arithmetic number, because the mean of its divisors is an integer number (2558976000).

Almost surely, 2^321780089484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321780089484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491323392000).

321780089484 is an abundant number, since it is smaller than the sum of its proper divisors (660866694516).

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

321780089484 is a wasteful number, since it uses less digits than its factorization.

321780089484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 321780089484 in words is "three hundred twenty-one billion, seven hundred eighty million, eighty-nine thousand, four hundred eighty-four".