320705480785 has 32 divisors (see below), whose sum is σ = 402686444160. Its totient is φ = 244987545600.

The previous prime is 320705480783. The next prime is 320705480801. The reversal of 320705480785 is 587084507023.

It is not a de Polignac number, because 320705480785 - 2¹ = 320705480783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320705480783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2226145 + ... + 2365825.

It is an arithmetic number, because the mean of its divisors is an integer number (12583951380).

Almost surely, 2^320705480785 is an apocalyptic number.

It is an amenable number.

320705480785 is a deficient number, since it is larger than the sum of its proper divisors (81980963375).

320705480785 is a wasteful number, since it uses less digits than its factorization.

320705480785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139969.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 320705480785 in words is "three hundred twenty billion, seven hundred five million, four hundred eighty thousand, seven hundred eighty-five".