13734575020561 has 4 divisors (see below), whose sum is σ = 13876168577572. Its totient is φ = 13592981463552.

The previous prime is 13734575020559. The next prime is 13734575020667. The reversal of 13734575020561 is 16502057543731.

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 6386138380561 + 7348436640000 = 2527081^2 + 2710800^2 .

It is a cyclic number.

It is not a de Polignac number, because 13734575020561 - 2¹ = 13734575020559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13734575050561) by changing a digit.

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, 70796778360 + ... + 70796778553.

It is an arithmetic number, because the mean of its divisors is an integer number (3469042144393).

Almost surely, 2^{13734575020561} is an apocalyptic number.

It is an amenable number.

13734575020561 is a deficient number, since it is larger than the sum of its proper divisors (141593557011).

13734575020561 is an equidigital number, since it uses as much as digits as its factorization.

13734575020561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141593557010.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 13734575020561 in words is "thirteen trillion, seven hundred thirty-four billion, five hundred seventy-five million, twenty thousand, five hundred sixty-one".