12055681851 has 4 divisors (see below), whose sum is σ = 16074242472. Its totient is φ = 8037121232.

The previous prime is 12055681831. The next prime is 12055681867. The reversal of 12055681851 is 15818655021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12055681851 - 2²³ = 12047293243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12055681831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009280306 + ... + 2009280311.

It is an arithmetic number, because the mean of its divisors is an integer number (4018560618).

Almost surely, 2^12055681851 is an apocalyptic number.

12055681851 is a deficient number, since it is larger than the sum of its proper divisors (4018560621).

12055681851 is an equidigital number, since it uses as much as digits as its factorization.

12055681851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018560620.

The product of its (nonzero) digits is 96000, while the sum is 42.

The spelling of 12055681851 in words is "twelve billion, fifty-five million, six hundred eighty-one thousand, eight hundred fifty-one".