11553361563 has 16 divisors (see below), whose sum is σ = 15435104256. Its totient is φ = 7686949440.

The previous prime is 11553361553. The next prime is 11553361607. The reversal of 11553361563 is 36516335511.

It is not a de Polignac number, because 11553361563 - 2⁵ = 11553361531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11553361543) 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, 5471878 + ... + 5473988.

It is an arithmetic number, because the mean of its divisors is an integer number (964694016).

Almost surely, 2^11553361563 is an apocalyptic number.

11553361563 is a deficient number, since it is larger than the sum of its proper divisors (3881742693).

11553361563 is a wasteful number, since it uses less digits than its factorization.

11553361563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874.

The product of its digits is 121500, while the sum is 39.

The spelling of 11553361563 in words is "eleven billion, five hundred fifty-three million, three hundred sixty-one thousand, five hundred sixty-three".