320023456639 has 2 divisors, whose sum is σ = 320023456640. Its totient is φ = 320023456638.

The previous prime is 320023456619. The next prime is 320023456657. The reversal of 320023456639 is 936654320023.

It is a strong prime.

It is an emirp because it is prime and its reverse (936654320023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320023456639 - 2⁹ = 320023456127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320023456595 and 320023456604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320023456609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160011728319 + 160011728320.

It is an arithmetic number, because the mean of its divisors is an integer number (160011728320).

Almost surely, 2^320023456639 is an apocalyptic number.

320023456639 is a deficient number, since it is larger than the sum of its proper divisors (1).

320023456639 is an equidigital number, since it uses as much as digits as its factorization.

320023456639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 43.

The spelling of 320023456639 in words is "three hundred twenty billion, twenty-three million, four hundred fifty-six thousand, six hundred thirty-nine".