11967447996 has 144 divisors (see below), whose sum is σ = 36460220160. Its totient is φ = 3233260800.

The previous prime is 11967447971. The next prime is 11967448013. The reversal of 11967447996 is 69974476911.

11967447996 is a `hidden beast` number, since 1 + 1 + 9 + 6 + 74 + 479 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (20575296) is a multiple of the sum of its prime factors (4704).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2952171 + ... + 2956221.

Almost surely, 2^11967447996 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 11967447996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18230110080).

11967447996 is an abundant number, since it is smaller than the sum of its proper divisors (24492772164).

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

11967447996 is a wasteful number, since it uses less digits than its factorization.

11967447996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704 (or 4699 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 11967447996 in words is "eleven billion, nine hundred sixty-seven million, four hundred forty-seven thousand, nine hundred ninety-six".