12050643727681 has 16 divisors (see below), whose sum is σ = 13070735650000. Its totient is φ = 11043968053248.

The previous prime is 12050643727583. The next prime is 12050643727721. The reversal of 12050643727681 is 18672734605021.

12050643727681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2143761577281 + 9906882150400 = 1464159^2 + 3147520^2 .

It is not a de Polignac number, because 12050643727681 - 2⁷ = 12050643727553 is a prime.

It is a super-2 number, since 2×12050643727681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12050643727481) 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, 185605 + ... + 4912813.

It is an arithmetic number, because the mean of its divisors is an integer number (816920978125).

Almost surely, 2^{12050643727681} is an apocalyptic number.

It is an amenable number.

12050643727681 is a deficient number, since it is larger than the sum of its proper divisors (1020091922319).

12050643727681 is a wasteful number, since it uses less digits than its factorization.

12050643727681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728628.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 12050643727681 in words is "twelve trillion, fifty billion, six hundred forty-three million, seven hundred twenty-seven thousand, six hundred eighty-one".