320726644797 has 8 divisors (see below), whose sum is σ = 460530566944. Its totient is φ = 197370242928.

The previous prime is 320726644751. The next prime is 320726644807. The reversal of 320726644797 is 797446627023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320726644797 - 2¹¹ = 320726642749 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 (320726644727) 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 7 ways as a sum of consecutive naturals, for example, 4111880023 + ... + 4111880100.

It is an arithmetic number, because the mean of its divisors is an integer number (57566320868).

Almost surely, 2^320726644797 is an apocalyptic number.

It is an amenable number.

320726644797 is a deficient number, since it is larger than the sum of its proper divisors (139803922147).

320726644797 is a wasteful number, since it uses less digits than its factorization.

320726644797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223760139.

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 320726644797 in words is "three hundred twenty billion, seven hundred twenty-six million, six hundred forty-four thousand, seven hundred ninety-seven".