320388539413 has 2 divisors, whose sum is σ = 320388539414. Its totient is φ = 320388539412.

The previous prime is 320388539347. The next prime is 320388539473. The reversal of 320388539413 is 314935883023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166066845169 + 154321694244 = 407513^2 + 392838^2 .

It is a cyclic number.

It is not a de Polignac number, because 320388539413 - 2¹⁷ = 320388408341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320388539473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160194269706 + 160194269707.

It is an arithmetic number, because the mean of its divisors is an integer number (160194269707).

Almost surely, 2^320388539413 is an apocalyptic number.

It is an amenable number.

320388539413 is a deficient number, since it is larger than the sum of its proper divisors (1).

320388539413 is an equidigital number, since it uses as much as digits as its factorization.

320388539413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 320388539413 in words is "three hundred twenty billion, three hundred eighty-eight million, five hundred thirty-nine thousand, four hundred thirteen".