18685275077017 has 16 divisors (see below), whose sum is σ = 18838338220800. Its totient is φ = 18532487152080.

The previous prime is 18685275076961. The next prime is 18685275077057. The reversal of 18685275077017 is 71077057258681.

It is a cyclic number.

It is not a de Polignac number, because 18685275077017 - 2²³ = 18685266688409 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 18685275077017.

It is not an unprimeable number, because it can be changed into a prime (18685275077057) 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, 668582838 + ... + 668610784.

It is an arithmetic number, because the mean of its divisors is an integer number (1177396138800).

Almost surely, 2^{18685275077017} is an apocalyptic number.

It is an amenable number.

18685275077017 is a deficient number, since it is larger than the sum of its proper divisors (153063143783).

18685275077017 is a wasteful number, since it uses less digits than its factorization.

18685275077017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32676.

The product of its (nonzero) digits is 46099200, while the sum is 64.

The spelling of 18685275077017 in words is "eighteen trillion, six hundred eighty-five billion, two hundred seventy-five million, seventy-seven thousand, seventeen".