320138540793 has 24 divisors (see below), whose sum is σ = 498093073920. Its totient is φ = 197560946880.

The previous prime is 320138540789. The next prime is 320138540801. The reversal of 320138540793 is 397045831023.

320138540793 is a `hidden beast` number, since 3 + 2 + 0 + 1 + 38 + 540 + 79 + 3 = 666.

It is not a de Polignac number, because 320138540793 - 2² = 320138540789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320138540713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24938148 + ... + 24950981.

It is an arithmetic number, because the mean of its divisors is an integer number (20753878080).

Almost surely, 2^320138540793 is an apocalyptic number.

It is an amenable number.

320138540793 is a deficient number, since it is larger than the sum of its proper divisors (177954533127).

320138540793 is a wasteful number, since it uses less digits than its factorization.

320138540793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49889189 (or 49889186 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 320138540793 in words is "three hundred twenty billion, one hundred thirty-eight million, five hundred forty thousand, seven hundred ninety-three".