11530765543 has 12 divisors (see below), whose sum is σ = 13341384280. Its totient is φ = 9930800880.

The previous prime is 11530765537. The next prime is 11530765567. The reversal of 11530765543 is 34556703511.

It is not a de Polignac number, because 11530765543 - 2⁵ = 11530765511 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11530765496 and 11530765505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530765243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505480 + ... + 2510077.

Almost surely, 2^11530765543 is an apocalyptic number.

11530765543 is a deficient number, since it is larger than the sum of its proper divisors (1810618737).

11530765543 is a wasteful number, since it uses less digits than its factorization.

11530765543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015598 (or 5015587 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 11530765543 in words is "eleven billion, five hundred thirty million, seven hundred sixty-five thousand, five hundred forty-three".