11553552243 has 12 divisors (see below), whose sum is σ = 17566804840. Its totient is φ = 7296980256.

The previous prime is 11553552209. The next prime is 11553552271. The reversal of 11553552243 is 34225535511.

11553552243 is a `hidden beast` number, since 1 + 15 + 53 + 552 + 2 + 43 = 666.

It is not a de Polignac number, because 11553552243 - 2⁸ = 11553551987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11553552198 and 11553552207.

It is not an unprimeable number, because it can be changed into a prime (11553552343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33782146 + ... + 33782487.

Almost surely, 2^11553552243 is an apocalyptic number.

11553552243 is a deficient number, since it is larger than the sum of its proper divisors (6013252597).

11553552243 is a wasteful number, since it uses less digits than its factorization.

11553552243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67564658 (or 67564655 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 11553552243 in words is "eleven billion, five hundred fifty-three million, five hundred fifty-two thousand, two hundred forty-three".