13122545504545 has 4 divisors (see below), whose sum is σ = 15747054605460. Its totient is φ = 10498036403632.

The previous prime is 13122545504521. The next prime is 13122545504591. The reversal of 13122545504545 is 54540554522131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8567838305569 + 4554707198976 = 2927087^2 + 2134176^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122545504545 - 2¹¹ = 13122545502497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13122545504495 and 13122545504504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312254550450 + ... + 1312254550459.

It is an arithmetic number, because the mean of its divisors is an integer number (3936763651365).

Almost surely, 2^{13122545504545} is an apocalyptic number.

It is an amenable number.

13122545504545 is a deficient number, since it is larger than the sum of its proper divisors (2624509100915).

13122545504545 is an equidigital number, since it uses as much as digits as its factorization.

13122545504545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624509100914.

The product of its (nonzero) digits is 2400000, while the sum is 46.

The spelling of 13122545504545 in words is "thirteen trillion, one hundred twenty-two billion, five hundred forty-five million, five hundred four thousand, five hundred forty-five".