320078775744 has 392 divisors, whose sum is σ = 1172075664480. Its totient is φ = 84415260672.

The previous prime is 320078775739. The next prime is 320078775749. The reversal of 320078775744 is 447577870023.

It is an interprime number because it is at equal distance from previous prime (320078775739) and next prime (320078775749).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320078775749) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4208002 + ... + 4283390.

It is an arithmetic number, because the mean of its divisors is an integer number (2989988940).

Almost surely, 2^320078775744 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 320078775744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586037832240).

320078775744 is an abundant number, since it is smaller than the sum of its proper divisors (851996888736).

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

320078775744 is an equidigital number, since it uses as much as digits as its factorization.

320078775744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75439 (or 75414 counting only the distinct ones).

The product of its (nonzero) digits is 9219840, while the sum is 54.

The spelling of 320078775744 in words is "three hundred twenty billion, seventy-eight million, seven hundred seventy-five thousand, seven hundred forty-four".