11966655712 has 96 divisors (see below), whose sum is σ = 27095814144. Its totient is φ = 5151705600.

The previous prime is 11966655689. The next prime is 11966655719. The reversal of 11966655712 is 21755666911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11966655719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501198 + ... + 524530.

It is an arithmetic number, because the mean of its divisors is an integer number (282248064).

Almost surely, 2^11966655712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11966655712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13547907072).

11966655712 is an abundant number, since it is smaller than the sum of its proper divisors (15129158432).

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

11966655712 is a wasteful number, since it uses less digits than its factorization.

11966655712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23432 (or 23424 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The spelling of 11966655712 in words is "eleven billion, nine hundred sixty-six million, six hundred fifty-five thousand, seven hundred twelve".