321778360876 has 60 divisors (see below), whose sum is σ = 691500460280. Its totient is φ = 130646779200.

The previous prime is 321778360859. The next prime is 321778360879. The reversal of 321778360876 is 678063877123.

It is a self number, because there is not a number n which added to its sum of digits gives 321778360876.

It is not an unprimeable number, because it can be changed into a prime (321778360879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 699225 + ... + 1064176.

Almost surely, 2^321778360876 is an apocalyptic number.

It is an amenable number.

321778360876 is an abundant number, since it is smaller than the sum of its proper divisors (369722099404).

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

321778360876 is a wasteful number, since it uses less digits than its factorization.

321778360876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763452 (or 1763429 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 321778360876 in words is "three hundred twenty-one billion, seven hundred seventy-eight million, three hundred sixty thousand, eight hundred seventy-six".