12147088985820 has 96 divisors (see below), whose sum is σ = 37850835133440. Its totient is φ = 3234090162240.

The previous prime is 12147088985771. The next prime is 12147088985827. The reversal of 12147088985820 is 2858988074121.

12147088985820 is a `hidden beast` number, since 1 + 2 + 1 + 47 + 0 + 8 + 8 + 9 + 8 + 582 + 0 = 666.

It is a super-2 number, since 2×12147088985820² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147088985827) 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 31 ways as a sum of consecutive naturals, for example, 17483832 + ... + 18165311.

It is an arithmetic number, because the mean of its divisors is an integer number (394279532640).

Almost surely, 2^{12147088985820} is an apocalyptic number.

12147088985820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12147088985820 is an abundant number, since it is smaller than the sum of its proper divisors (25703746147620).

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

12147088985820 is a wasteful number, since it uses less digits than its factorization.

12147088985820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35649792 (or 35649784 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 63.

The spelling of 12147088985820 in words is "twelve trillion, one hundred forty-seven billion, eighty-eight million, nine hundred eighty-five thousand, eight hundred twenty".