320432350663 has 4 divisors (see below), whose sum is σ = 321950987608. Its totient is φ = 318913713720.

The previous prime is 320432350619. The next prime is 320432350723. The reversal of 320432350663 is 366053234023.

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

It is a cyclic number.

It is not a de Polignac number, because 320432350663 - 2³³ = 311842416071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320432350163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759318156 + ... + 759318577.

It is an arithmetic number, because the mean of its divisors is an integer number (80487746902).

Almost surely, 2^320432350663 is an apocalyptic number.

320432350663 is a deficient number, since it is larger than the sum of its proper divisors (1518636945).

320432350663 is a wasteful number, since it uses less digits than its factorization.

320432350663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518636944.

The product of its (nonzero) digits is 233280, while the sum is 37.

Adding to 320432350663 its reverse (366053234023), we get a palindrome (686485584686).

The spelling of 320432350663 in words is "three hundred twenty billion, four hundred thirty-two million, three hundred fifty thousand, six hundred sixty-three".