320669839879 has 2 divisors, whose sum is σ = 320669839880. Its totient is φ = 320669839878.

The previous prime is 320669839783. The next prime is 320669839907. The reversal of 320669839879 is 978938966023.

It is a strong prime.

It is an emirp because it is prime and its reverse (978938966023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320669839879 - 2³⁷ = 183230886407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320669839379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160334919939 + 160334919940.

It is an arithmetic number, because the mean of its divisors is an integer number (160334919940).

Almost surely, 2^320669839879 is an apocalyptic number.

320669839879 is a deficient number, since it is larger than the sum of its proper divisors (1).

320669839879 is an equidigital number, since it uses as much as digits as its factorization.

320669839879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211631616, while the sum is 70.

The spelling of 320669839879 in words is "three hundred twenty billion, six hundred sixty-nine million, eight hundred thirty-nine thousand, eight hundred seventy-nine".