18272728201001 has 4 divisors (see below), whose sum is σ = 18275331531600. Its totient is φ = 18270124870404.

The previous prime is 18272728200997. The next prime is 18272728201003. The reversal of 18272728201001 is 10010282727281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18272728201001 - 2² = 18272728200997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18272728201001.

It is not an unprimeable number, because it can be changed into a prime (18272728201003) 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, 1301654771 + ... + 1301668808.

It is an arithmetic number, because the mean of its divisors is an integer number (4568832882900).

Almost surely, 2^{18272728201001} is an apocalyptic number.

It is an amenable number.

18272728201001 is a deficient number, since it is larger than the sum of its proper divisors (2603330599).

18272728201001 is an equidigital number, since it uses as much as digits as its factorization.

18272728201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603330598.

The product of its (nonzero) digits is 50176, while the sum is 41.

The spelling of 18272728201001 in words is "eighteen trillion, two hundred seventy-two billion, seven hundred twenty-eight million, two hundred one thousand, one".