11787147966 has 48 divisors (see below), whose sum is σ = 25930984464. Its totient is φ = 3569280000.

The previous prime is 11787147947. The next prime is 11787147997. The reversal of 11787147966 is 66974178711.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1157256 + ... + 1167396.

It is an arithmetic number, because the mean of its divisors is an integer number (540228843).

Almost surely, 2^11787147966 is an apocalyptic number.

11787147966 is an abundant number, since it is smaller than the sum of its proper divisors (14143836498).

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

11787147966 is a wasteful number, since it uses less digits than its factorization.

11787147966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11769 (or 11758 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 57.

The spelling of 11787147966 in words is "eleven billion, seven hundred eighty-seven million, one hundred forty-seven thousand, nine hundred sixty-six".