13235553166561 has 8 divisors (see below), whose sum is σ = 14711215184064. Its totient is φ = 11805296134320.

The previous prime is 13235553166499. The next prime is 13235553166571. The reversal of 13235553166561 is 16566135553231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13235553166561 - 2²³ = 13235544777953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13235553166499 and 13235553166508.

It is not an unprimeable number, because it can be changed into a prime (13235553166571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11351245701 + ... + 11351246866.

It is an arithmetic number, because the mean of its divisors is an integer number (1838901898008).

Almost surely, 2^{13235553166561} is an apocalyptic number.

13235553166561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13235553166561 is a deficient number, since it is larger than the sum of its proper divisors (1475662017503).

13235553166561 is a wasteful number, since it uses less digits than its factorization.

13235553166561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22702492631.

The product of its digits is 7290000, while the sum is 52.

The spelling of 13235553166561 in words is "thirteen trillion, two hundred thirty-five billion, five hundred fifty-three million, one hundred sixty-six thousand, five hundred sixty-one".