11513053352561 has 4 divisors (see below), whose sum is σ = 11513227067124. Its totient is φ = 11512879638000.

The previous prime is 11513053352533. The next prime is 11513053352599. The reversal of 11513053352561 is 16525335031511.

11513053352561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1503701325025 + 10009352027536 = 1226255^2 + 3163756^2 .

It is a cyclic number.

It is not a de Polignac number, because 11513053352561 - 2³⁴ = 11495873483377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11513053355561) 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, 86757830 + ... + 86890431.

It is an arithmetic number, because the mean of its divisors is an integer number (2878306766781).

Almost surely, 2^{11513053352561} is an apocalyptic number.

It is an amenable number.

11513053352561 is a deficient number, since it is larger than the sum of its proper divisors (173714563).

11513053352561 is an equidigital number, since it uses as much as digits as its factorization.

11513053352561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173714562.

The product of its (nonzero) digits is 202500, while the sum is 41.

The spelling of 11513053352561 in words is "eleven trillion, five hundred thirteen billion, fifty-three million, three hundred fifty-two thousand, five hundred sixty-one".