18560873661009 has 16 divisors (see below), whose sum is σ = 25114944995712. Its totient is φ = 12191578697088.

The previous prime is 18560873661007. The next prime is 18560873661013. The reversal of 18560873661009 is 90016637806581.

It is not a de Polignac number, because 18560873661009 - 2¹ = 18560873661007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18560873661007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152394844 + ... + 152516589.

It is an arithmetic number, because the mean of its divisors is an integer number (1569684062232).

Almost surely, 2^{18560873661009} is an apocalyptic number.

It is an amenable number.

18560873661009 is a deficient number, since it is larger than the sum of its proper divisors (6554071334703).

18560873661009 is a wasteful number, since it uses less digits than its factorization.

18560873661009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304911736.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 18560873661009 in words is "eighteen trillion, five hundred sixty billion, eight hundred seventy-three million, six hundred sixty-one thousand, nine".