18605703807813 has 8 divisors (see below), whose sum is σ = 25214287127776. Its totient is φ = 12200461513200.

The previous prime is 18605703807781. The next prime is 18605703807857. The reversal of 18605703807813 is 31870830750681.

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

It is not a de Polignac number, because 18605703807813 - 2⁵ = 18605703807781 is a prime.

It is a super-3 number, since 3×18605703807813³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18605703807113) 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, 50835256123 + ... + 50835256488.

It is an arithmetic number, because the mean of its divisors is an integer number (3151785890972).

Almost surely, 2^{18605703807813} is an apocalyptic number.

It is an amenable number.

18605703807813 is a deficient number, since it is larger than the sum of its proper divisors (6608583319963).

18605703807813 is a wasteful number, since it uses less digits than its factorization.

18605703807813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101670512675.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 18605703807813 in words is "eighteen trillion, six hundred five billion, seven hundred three million, eight hundred seven thousand, eight hundred thirteen".