320726284783 has 4 divisors (see below), whose sum is σ = 320897523328. Its totient is φ = 320555046240.

The previous prime is 320726284757. The next prime is 320726284819. The reversal of 320726284783 is 387482627023.

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 320726284783 - 2¹⁷ = 320726153711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320726284783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320726284583) 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, 85616463 + ... + 85620208.

It is an arithmetic number, because the mean of its divisors is an integer number (80224380832).

Almost surely, 2^320726284783 is an apocalyptic number.

320726284783 is a deficient number, since it is larger than the sum of its proper divisors (171238545).

320726284783 is a wasteful number, since it uses less digits than its factorization.

320726284783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171238544.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 320726284783 in words is "three hundred twenty billion, seven hundred twenty-six million, two hundred eighty-four thousand, seven hundred eighty-three".