13145045761 has 4 divisors (see below), whose sum is σ = 13148463024. Its totient is φ = 13141628500.

The previous prime is 13145045741. The next prime is 13145045773. The reversal of 13145045761 is 16754054131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16754054131 = 2239 ⋅7482829.

It is a cyclic number.

It is not a de Polignac number, because 13145045761 - 2¹⁹ = 13144521473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13145045761.

It is not an unprimeable number, because it can be changed into a prime (13145045701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702855 + ... + 1710556.

It is an arithmetic number, because the mean of its divisors is an integer number (3287115756).

Almost surely, 2^13145045761 is an apocalyptic number.

It is an amenable number.

13145045761 is a deficient number, since it is larger than the sum of its proper divisors (3417263).

13145045761 is an equidigital number, since it uses as much as digits as its factorization.

13145045761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417262.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 13145045761 its reverse (16754054131), we get a palindrome (29899099892).

The spelling of 13145045761 in words is "thirteen billion, one hundred forty-five million, forty-five thousand, seven hundred sixty-one".