12381801695 has 4 divisors (see below), whose sum is σ = 14858162040. Its totient is φ = 9905441352.

The previous prime is 12381801673. The next prime is 12381801697. The reversal of 12381801695 is 59610818321.

12381801695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59610818321 = 29759 ⋅2003119.

It is a cyclic number.

It is not a de Polignac number, because 12381801695 - 2²² = 12377607391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381801697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1238180165 + ... + 1238180174.

It is an arithmetic number, because the mean of its divisors is an integer number (3714540510).

Almost surely, 2^12381801695 is an apocalyptic number.

12381801695 is a deficient number, since it is larger than the sum of its proper divisors (2476360345).

12381801695 is an equidigital number, since it uses as much as digits as its factorization.

12381801695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476360344.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 12381801695 in words is "twelve billion, three hundred eighty-one million, eight hundred one thousand, six hundred ninety-five".