18510010085101 has 8 divisors (see below), whose sum is σ = 19598931959544. Its totient is φ = 17421099072000.

The previous prime is 18510010085093. The next prime is 18510010085123. The reversal of 18510010085101 is 10158001001581.

It can be written as a sum of positive squares in 4 ways, for example, as 409665282601 + 18100344802500 = 640051^2 + 4254450^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18510010085101 - 2³ = 18510010085093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18510010185101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933441 + ... + 6155593.

It is an arithmetic number, because the mean of its divisors is an integer number (2449866494943).

Almost surely, 2^{18510010085101} is an apocalyptic number.

It is an amenable number.

18510010085101 is a deficient number, since it is larger than the sum of its proper divisors (1088921874443).

18510010085101 is a wasteful number, since it uses less digits than its factorization.

18510010085101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430671.

The product of its (nonzero) digits is 1600, while the sum is 31.

Adding to 18510010085101 its reverse (10158001001581), we get a palindrome (28668011086682).

The spelling of 18510010085101 in words is "eighteen trillion, five hundred ten billion, ten million, eighty-five thousand, one hundred one".