6364181818201 has 4 divisors (see below), whose sum is σ = 6364193928372. Its totient is φ = 6364169708032.

The previous prime is 6364181818151. The next prime is 6364181818217. The reversal of 6364181818201 is 1028181814636.

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 1435000347225 + 4929181470976 = 1197915^2 + 2220176^2 .

It is a cyclic number.

It is not a de Polignac number, because 6364181818201 - 2²⁷ = 6364047600473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6364181818261) 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, 5229256 + ... + 6330361.

It is an arithmetic number, because the mean of its divisors is an integer number (1591048482093).

Almost surely, 2^{6364181818201} is an apocalyptic number.

It is an amenable number.

6364181818201 is a deficient number, since it is larger than the sum of its proper divisors (12110171).

6364181818201 is a wasteful number, since it uses less digits than its factorization.

6364181818201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12110170.

The product of its (nonzero) digits is 442368, while the sum is 49.

The spelling of 6364181818201 in words is "six trillion, three hundred sixty-four billion, one hundred eighty-one million, eight hundred eighteen thousand, two hundred one".