11571711968 has 48 divisors (see below), whose sum is σ = 23992027920. Its totient is φ = 5478782976.

The previous prime is 11571711967. The next prime is 11571711971. The reversal of 11571711968 is 86911717511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571711967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2208680 + ... + 2213912.

It is an arithmetic number, because the mean of its divisors is an integer number (499833915).

Almost surely, 2^11571711968 is an apocalyptic number.

It is an amenable number.

11571711968 is an abundant number, since it is smaller than the sum of its proper divisors (12420315952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11571711968 is a wasteful number, since it uses less digits than its factorization.

11571711968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899 (or 8891 counting only the distinct ones).

The product of its digits is 105840, while the sum is 47.

The spelling of 11571711968 in words is "eleven billion, five hundred seventy-one million, seven hundred eleven thousand, nine hundred sixty-eight".