11554505513563 has 16 divisors (see below), whose sum is σ = 11886097878720. Its totient is φ = 11223935856000.

The previous prime is 11554505513557. The next prime is 11554505513567. The reversal of 11554505513563 is 36531550545511.

It is a cyclic number.

It is not a de Polignac number, because 11554505513563 - 2⁹ = 11554505513051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11554505513567) 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, 137657578 + ... + 137741488.

It is an arithmetic number, because the mean of its divisors is an integer number (742881117420).

Almost surely, 2^{11554505513563} is an apocalyptic number.

11554505513563 is a deficient number, since it is larger than the sum of its proper divisors (331592365157).

11554505513563 is an equidigital number, since it uses as much as digits as its factorization.

11554505513563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89958.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 11554505513563 in words is "eleven trillion, five hundred fifty-four billion, five hundred five million, five hundred thirteen thousand, five hundred sixty-three".