18685040874605 has 16 divisors (see below), whose sum is σ = 25860292487040. Its totient is φ = 12695052670272.

The previous prime is 18685040874583. The next prime is 18685040874607. The reversal of 18685040874605 is 50647804058681.

It is not a de Polignac number, because 18685040874605 - 2⁶ = 18685040874541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18685040874607) 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, 2448887519 + ... + 2448895148.

It is an arithmetic number, because the mean of its divisors is an integer number (1616268280440).

Almost surely, 2^{18685040874605} is an apocalyptic number.

It is an amenable number.

18685040874605 is a deficient number, since it is larger than the sum of its proper divisors (7175251612435).

18685040874605 is a wasteful number, since it uses less digits than its factorization.

18685040874605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897782788.

The product of its (nonzero) digits is 51609600, while the sum is 62.

The spelling of 18685040874605 in words is "eighteen trillion, six hundred eighty-five billion, forty million, eight hundred seventy-four thousand, six hundred five".