320782337489 has 4 divisors (see below), whose sum is σ = 326219326320. Its totient is φ = 315345348660.

The previous prime is 320782337441. The next prime is 320782337501. The reversal of 320782337489 is 984733287023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984733287023 = 541 ⋅1820209403.

It is a cyclic number.

It is not a de Polignac number, because 320782337489 - 2²⁰ = 320781288913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320782337389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2718494327 + ... + 2718494444.

It is an arithmetic number, because the mean of its divisors is an integer number (81554831580).

Almost surely, 2^320782337489 is an apocalyptic number.

It is an amenable number.

320782337489 is a deficient number, since it is larger than the sum of its proper divisors (5436988831).

320782337489 is an equidigital number, since it uses as much as digits as its factorization.

320782337489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436988830.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 320782337489 in words is "three hundred twenty billion, seven hundred eighty-two million, three hundred thirty-seven thousand, four hundred eighty-nine".