320705671207 has 4 divisors (see below), whose sum is σ = 337584917080. Its totient is φ = 303826425336.

The previous prime is 320705671183. The next prime is 320705671213. The reversal of 320705671207 is 702176507023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702176507023 = 103 ⋅6817247641.

It is a cyclic number.

It is not a de Polignac number, because 320705671207 - 2¹¹ = 320705669159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320705671207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320705671217) 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 3 ways as a sum of consecutive naturals, for example, 8439622908 + ... + 8439622945.

It is an arithmetic number, because the mean of its divisors is an integer number (84396229270).

Almost surely, 2^320705671207 is an apocalyptic number.

320705671207 is a deficient number, since it is larger than the sum of its proper divisors (16879245873).

320705671207 is a wasteful number, since it uses less digits than its factorization.

320705671207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16879245872.

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 320705671207 in words is "three hundred twenty billion, seven hundred five million, six hundred seventy-one thousand, two hundred seven".