320402440113463 has 4 divisors (see below), whose sum is σ = 322192397879640. Its totient is φ = 318612482347288.

The previous prime is 320402440113401. The next prime is 320402440113473. The reversal of 320402440113463 is 364311044204023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320402440113463 is a prime.

It is a super-2 number, since 2×320402440113463² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320402440113473) 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 3 ways as a sum of consecutive naturals, for example, 894978882820 + ... + 894978883177.

It is an arithmetic number, because the mean of its divisors is an integer number (80548099469910).

Almost surely, 2^{320402440113463} is an apocalyptic number.

320402440113463 is a deficient number, since it is larger than the sum of its proper divisors (1789957766177).

320402440113463 is a wasteful number, since it uses less digits than its factorization.

320402440113463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789957766176.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 320402440113463 its reverse (364311044204023), we get a palindrome (684713484317486).

The spelling of 320402440113463 in words is "three hundred twenty trillion, four hundred two billion, four hundred forty million, one hundred thirteen thousand, four hundred sixty-three".