11543364653 has 4 divisors (see below), whose sum is σ = 11941411740. Its totient is φ = 11145317568.

The previous prime is 11543364619. The next prime is 11543364697. The reversal of 11543364653 is 35646334511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35646334511 = 19 ⋅1876122869.

It can be written as a sum of positive squares in 2 ways, for example, as 9065515369 + 2477849284 = 95213^2 + 49778^2 .

It is a cyclic number.

It is not a de Polignac number, because 11543364653 - 2³⁰ = 10469622829 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 11543364653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543364353) 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, 199023500 + ... + 199023557.

It is an arithmetic number, because the mean of its divisors is an integer number (2985352935).

Almost surely, 2^11543364653 is an apocalyptic number.

It is an amenable number.

11543364653 is a deficient number, since it is larger than the sum of its proper divisors (398047087).

11543364653 is an equidigital number, since it uses as much as digits as its factorization.

11543364653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398047086.

The product of its digits is 388800, while the sum is 41.

The spelling of 11543364653 in words is "eleven billion, five hundred forty-three million, three hundred sixty-four thousand, six hundred fifty-three".