320008031778 has 64 divisors (see below), whose sum is σ = 675006877440. Its totient is φ = 100937920512.

The previous prime is 320008031771. The next prime is 320008031779. The reversal of 320008031778 is 877130800023.

It is not an unprimeable number, because it can be changed into a prime (320008031771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56445928 + ... + 56451596.

It is an arithmetic number, because the mean of its divisors is an integer number (10546982460).

Almost surely, 2^320008031778 is an apocalyptic number.

320008031778 is an abundant number, since it is smaller than the sum of its proper divisors (354998845662).

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

320008031778 is a wasteful number, since it uses less digits than its factorization.

320008031778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 320008031778 in words is "three hundred twenty billion, eight million, thirty-one thousand, seven hundred seventy-eight".