320170387639 has 2 divisors, whose sum is σ = 320170387640. Its totient is φ = 320170387638.

The previous prime is 320170387637. The next prime is 320170387657. The reversal of 320170387639 is 936783071023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320170387639 - 2¹ = 320170387637 is a prime.

Together with 320170387637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 320170387592 and 320170387601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320170387637) 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 as a sum of consecutive naturals, namely, 160085193819 + 160085193820.

It is an arithmetic number, because the mean of its divisors is an integer number (160085193820).

Almost surely, 2^320170387639 is an apocalyptic number.

320170387639 is a deficient number, since it is larger than the sum of its proper divisors (1).

320170387639 is an equidigital number, since it uses as much as digits as its factorization.

320170387639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 320170387639 in words is "three hundred twenty billion, one hundred seventy million, three hundred eighty-seven thousand, six hundred thirty-nine".