13020321079 has 2 divisors, whose sum is σ = 13020321080. Its totient is φ = 13020321078.

The previous prime is 13020321077. The next prime is 13020321103. The reversal of 13020321079 is 97012302031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13020321079 - 2¹ = 13020321077 is a prime.

It is a super-2 number, since 2×13020321079² (a number of 21 digits) contains 22 as substring.

Together with 13020321077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020321073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510160539 + 6510160540.

It is an arithmetic number, because the mean of its divisors is an integer number (6510160540).

Almost surely, 2^13020321079 is an apocalyptic number.

13020321079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020321079 is an equidigital number, since it uses as much as digits as its factorization.

13020321079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The spelling of 13020321079 in words is "thirteen billion, twenty million, three hundred twenty-one thousand, seventy-nine".