11532687571 has 4 divisors (see below), whose sum is σ = 11533816152. Its totient is φ = 11531558992.

The previous prime is 11532687547. The next prime is 11532687599. The reversal of 11532687571 is 17578623511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11532687571 - 2⁵ = 11532687539 is a prime.

It is a super-6 number, since 6×11532687571⁶ (a number of 62 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11532687521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548821 + ... + 569446.

It is an arithmetic number, because the mean of its divisors is an integer number (2883454038).

Almost surely, 2^11532687571 is an apocalyptic number.

11532687571 is a deficient number, since it is larger than the sum of its proper divisors (1128581).

11532687571 is a wasteful number, since it uses less digits than its factorization.

11532687571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128580.

The product of its digits is 352800, while the sum is 46.

The spelling of 11532687571 in words is "eleven billion, five hundred thirty-two million, six hundred eighty-seven thousand, five hundred seventy-one".