13321441789 has 2 divisors, whose sum is σ = 13321441790. Its totient is φ = 13321441788.

The previous prime is 13321441787. The next prime is 13321441801. The reversal of 13321441789 is 98714412331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12219533764 + 1101908025 = 110542^2 + 33195^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321441789 - 2¹ = 13321441787 is a prime.

It is a super-2 number, since 2×13321441789² (a number of 21 digits) contains 22 as substring.

Together with 13321441787, 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 (13321441787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660720894 + 6660720895.

It is an arithmetic number, because the mean of its divisors is an integer number (6660720895).

Almost surely, 2^13321441789 is an apocalyptic number.

It is an amenable number.

13321441789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321441789 is an equidigital number, since it uses as much as digits as its factorization.

13321441789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The spelling of 13321441789 in words is "thirteen billion, three hundred twenty-one million, four hundred forty-one thousand, seven hundred eighty-nine".