11531120533563 has 16 divisors (see below), whose sum is σ = 15379927136640. Its totient is φ = 7684864250304.

The previous prime is 11531120533477. The next prime is 11531120533573. The reversal of 11531120533563 is 36533502113511.

It is not a de Polignac number, because 11531120533563 - 2¹⁷ = 11531120402491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11531120533573) 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, 118268928 + ... + 118366386.

It is an arithmetic number, because the mean of its divisors is an integer number (961245446040).

Almost surely, 2^{11531120533563} is an apocalyptic number.

11531120533563 is a deficient number, since it is larger than the sum of its proper divisors (3848806603077).

11531120533563 is an equidigital number, since it uses as much as digits as its factorization.

11531120533563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110138.

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

The spelling of 11531120533563 in words is "eleven trillion, five hundred thirty-one billion, one hundred twenty million, five hundred thirty-three thousand, five hundred sixty-three".