13499723594789 has 2 divisors, whose sum is σ = 13499723594790. Its totient is φ = 13499723594788.

The previous prime is 13499723594743. The next prime is 13499723594839. The reversal of 13499723594789 is 98749532799431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9339686088100 + 4160037506689 = 3056090^2 + 2039617^2 .

It is a cyclic number.

It is not a de Polignac number, because 13499723594789 - 2³⁶ = 13431004118053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13499723594389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749861797394 + 6749861797395.

It is an arithmetic number, because the mean of its divisors is an integer number (6749861797395).

Almost surely, 2^{13499723594789} is an apocalyptic number.

It is an amenable number.

13499723594789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499723594789 is an equidigital number, since it uses as much as digits as its factorization.

13499723594789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3703553280, while the sum is 80.

The spelling of 13499723594789 in words is "thirteen trillion, four hundred ninety-nine billion, seven hundred twenty-three million, five hundred ninety-four thousand, seven hundred eighty-nine".