18706820775253 has 8 divisors (see below), whose sum is σ = 21206112620000. Its totient is φ = 16359001163568.

The previous prime is 18706820775211. The next prime is 18706820775263. The reversal of 18706820775253 is 35257702860781.

It is a happy number.

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 18706820775253 - 2¹⁷ = 18706820644181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18706820775191 and 18706820775200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18706820775263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37868058003 + ... + 37868058496.

It is an arithmetic number, because the mean of its divisors is an integer number (2650764077500).

Almost surely, 2^{18706820775253} is an apocalyptic number.

18706820775253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18706820775253 is a deficient number, since it is larger than the sum of its proper divisors (2499291844747).

18706820775253 is a wasteful number, since it uses less digits than its factorization.

18706820775253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75736116531.

The product of its (nonzero) digits is 39513600, while the sum is 61.

The spelling of 18706820775253 in words is "eighteen trillion, seven hundred six billion, eight hundred twenty million, seven hundred seventy-five thousand, two hundred fifty-three".