13514645561 has 4 divisors (see below), whose sum is σ = 13518328692. Its totient is φ = 13510962432.

The previous prime is 13514645549. The next prime is 13514645609. The reversal of 13514645561 is 16554641531.

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 2666173225 + 10848472336 = 51635^2 + 104156^2 .

It is a cyclic number.

It is not a de Polignac number, because 13514645561 - 2⁶ = 13514645497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13514605561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836056 + ... + 1843401.

It is an arithmetic number, because the mean of its divisors is an integer number (3379582173).

Almost surely, 2^13514645561 is an apocalyptic number.

It is an amenable number.

13514645561 is a deficient number, since it is larger than the sum of its proper divisors (3683131).

13514645561 is an equidigital number, since it uses as much as digits as its factorization.

13514645561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683130.

The product of its digits is 216000, while the sum is 41.

The spelling of 13514645561 in words is "thirteen billion, five hundred fourteen million, six hundred forty-five thousand, five hundred sixty-one".