18744863016001 has 4 divisors (see below), whose sum is σ = 18745089998292. Its totient is φ = 18744636033712.

The previous prime is 18744863015981. The next prime is 18744863016043. The reversal of 18744863016001 is 10061036844781.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14942554113600 + 3802308902401 = 3865560^2 + 1949951^2 .

It is a cyclic number.

It is not a de Polignac number, because 18744863016001 - 2⁷ = 18744863015873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18744863016601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113367226 + ... + 113532451.

It is an arithmetic number, because the mean of its divisors is an integer number (4686272499573).

Almost surely, 2^{18744863016001} is an apocalyptic number.

It is an amenable number.

18744863016001 is a deficient number, since it is larger than the sum of its proper divisors (226982291).

18744863016001 is an equidigital number, since it uses as much as digits as its factorization.

18744863016001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226982290.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 18744863016001 in words is "eighteen trillion, seven hundred forty-four billion, eight hundred sixty-three million, sixteen thousand, one".