11771313543 has 36 divisors (see below), whose sum is σ = 19501875120. Its totient is φ = 6823935360.

The previous prime is 11771313539. The next prime is 11771313557. The reversal of 11771313543 is 34531317711.

11771313543 is a `hidden beast` number, since 1 + 17 + 71 + 31 + 3 + 543 = 666.

It is not a de Polignac number, because 11771313543 - 2² = 11771313539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11771313498 and 11771313507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771313503) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 209938 + ... + 260031.

Almost surely, 2^11771313543 is an apocalyptic number.

11771313543 is a deficient number, since it is larger than the sum of its proper divisors (7730561577).

11771313543 is a wasteful number, since it uses less digits than its factorization.

11771313543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470020 (or 470006 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The spelling of 11771313543 in words is "eleven billion, seven hundred seventy-one million, three hundred thirteen thousand, five hundred forty-three".