11895987768 has 32 divisors (see below), whose sum is σ = 33988536960. Its totient is φ = 3398853600.

The previous prime is 11895987751. The next prime is 11895987809. The reversal of 11895987768 is 86778959811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35404558 + ... + 35404893.

It is an arithmetic number, because the mean of its divisors is an integer number (1062141780).

Almost surely, 2^11895987768 is an apocalyptic number.

It is an amenable number.

11895987768 is an abundant number, since it is smaller than the sum of its proper divisors (22092549192).

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

11895987768 is a wasteful number, since it uses less digits than its factorization.

11895987768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70809467 (or 70809463 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 69.

The spelling of 11895987768 in words is "eleven billion, eight hundred ninety-five million, nine hundred eighty-seven thousand, seven hundred sixty-eight".