320352185109 has 16 divisors (see below), whose sum is σ = 465984829440. Its totient is φ = 194145333360.

The previous prime is 320352185063. The next prime is 320352185141. The reversal of 320352185109 is 901581253023.

It is not a de Polignac number, because 320352185109 - 2¹¹ = 320352183061 is a prime.

It is a super-2 number, since 2×320352185109² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320352186109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748572 + ... + 1095930.

It is an arithmetic number, because the mean of its divisors is an integer number (29124051840).

Almost surely, 2^320352185109 is an apocalyptic number.

It is an amenable number.

320352185109 is a deficient number, since it is larger than the sum of its proper divisors (145632644331).

320352185109 is a wasteful number, since it uses less digits than its factorization.

320352185109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375320.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 320352185109 in words is "three hundred twenty billion, three hundred fifty-two million, one hundred eighty-five thousand, one hundred nine".