18895220573305 has 4 divisors (see below), whose sum is σ = 22674264687972. Its totient is φ = 15116176458640.

The previous prime is 18895220573209. The next prime is 18895220573353. The reversal of 18895220573305 is 50337502259881.

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 12256244795664 + 6638975777641 = 3500892^2 + 2576621^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18895220573305 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 18895220573305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889522057326 + ... + 1889522057335.

It is an arithmetic number, because the mean of its divisors is an integer number (5668566171993).

Almost surely, 2^{18895220573305} is an apocalyptic number.

It is an amenable number.

18895220573305 is a deficient number, since it is larger than the sum of its proper divisors (3779044114667).

18895220573305 is an equidigital number, since it uses as much as digits as its factorization.

18895220573305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779044114666.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 18895220573305 in words is "eighteen trillion, eight hundred ninety-five billion, two hundred twenty million, five hundred seventy-three thousand, three hundred five".