320214788778 has 8 divisors (see below), whose sum is σ = 640429577568. Its totient is φ = 106738262924.

The previous prime is 320214788687. The next prime is 320214788791. The reversal of 320214788778 is 877887412023.

It is a sphenic number, since it is the product of 3 distinct primes.

320214788778 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26684565726 + ... + 26684565737.

It is an arithmetic number, because the mean of its divisors is an integer number (80053697196).

Almost surely, 2^320214788778 is an apocalyptic number.

320214788778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

320214788778 is a wasteful number, since it uses less digits than its factorization.

320214788778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53369131468.

The product of its (nonzero) digits is 8429568, while the sum is 57.

The spelling of 320214788778 in words is "three hundred twenty billion, two hundred fourteen million, seven hundred eighty-eight thousand, seven hundred seventy-eight".