12001287880836 has 36 divisors (see below), whose sum is σ = 30833909943564. Its totient is φ = 3934848484800.

The previous prime is 12001287880763. The next prime is 12001287880853. The reversal of 12001287880836 is 63808878210021.

12001287880836 is a `hidden beast` number, since 1 + 200 + 1 + 287 + 8 + 80 + 83 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5978465108100 + 6022822772736 = 2445090^2 + 2454144^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2732531475 + ... + 2732535866.

Almost surely, 2^{12001287880836} is an apocalyptic number.

It is an amenable number.

12001287880836 is an abundant number, since it is smaller than the sum of its proper divisors (18832622062728).

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

12001287880836 is a wasteful number, since it uses less digits than its factorization.

12001287880836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5465067412 (or 5465067407 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 12001287880836 in words is "twelve trillion, one billion, two hundred eighty-seven million, eight hundred eighty thousand, eight hundred thirty-six".