11563143553 has 16 divisors (see below), whose sum is σ = 12539741760. Its totient is φ = 10599107904.

The previous prime is 11563143539. The next prime is 11563143569. The reversal of 11563143553 is 35534136511.

It is a cyclic number.

It is not a de Polignac number, because 11563143553 - 2³³ = 2973208961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11563143583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4942458 + ... + 4944796.

It is an arithmetic number, because the mean of its divisors is an integer number (783733860).

Almost surely, 2^11563143553 is an apocalyptic number.

11563143553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11563143553 is a deficient number, since it is larger than the sum of its proper divisors (976598207).

11563143553 is a wasteful number, since it uses less digits than its factorization.

11563143553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848.

The product of its digits is 81000, while the sum is 37.

The spelling of 11563143553 in words is "eleven billion, five hundred sixty-three million, one hundred forty-three thousand, five hundred fifty-three".