11543552541 has 8 divisors (see below), whose sum is σ = 17101559360. Its totient is φ = 7695701676.

The previous prime is 11543552539. The next prime is 11543552549. The reversal of 11543552541 is 14525534511.

11543552541 is a `hidden beast` number, since 1 + 1 + 54 + 3 + 552 + 54 + 1 = 666.

It is not a de Polignac number, because 11543552541 - 2¹ = 11543552539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11543552496 and 11543552505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543552549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213769465 + ... + 213769518.

It is an arithmetic number, because the mean of its divisors is an integer number (2137694920).

Almost surely, 2^11543552541 is an apocalyptic number.

It is an amenable number.

11543552541 is a deficient number, since it is larger than the sum of its proper divisors (5558006819).

11543552541 is an equidigital number, since it uses as much as digits as its factorization.

11543552541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427538992 (or 427538986 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The spelling of 11543552541 in words is "eleven billion, five hundred forty-three million, five hundred fifty-two thousand, five hundred forty-one".