11996578107612 has 144 divisors (see below), whose sum is σ = 34874602963200. Its totient is φ = 3406077561600.

The previous prime is 11996578107581. The next prime is 11996578107617. The reversal of 11996578107612 is 21670187569911.

11996578107612 is a `hidden beast` number, since 1 + 1 + 9 + 9 + 6 + 5 + 7 + 8 + 1 + 0 + 7 + 612 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11996578107612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11996578107617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65360064 + ... + 65543352.

It is an arithmetic number, because the mean of its divisors is an integer number (242184742800).

Almost surely, 2^{11996578107612} is an apocalyptic number.

11996578107612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11996578107612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17437301481600).

11996578107612 is an abundant number, since it is smaller than the sum of its proper divisors (22878024855588).

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

11996578107612 is a wasteful number, since it uses less digits than its factorization.

11996578107612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184936 (or 184931 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The spelling of 11996578107612 in words is "eleven trillion, nine hundred ninety-six billion, five hundred seventy-eight million, one hundred seven thousand, six hundred twelve".