18718710255 has 48 divisors (see below), whose sum is σ = 38710815840. Its totient is φ = 8557121664.

The previous prime is 18718710229. The next prime is 18718710271. The reversal of 18718710255 is 55201781781.

It is not a de Polignac number, because 18718710255 - 2¹³ = 18718702063 is a prime.

It is a super-2 number, since 2×18718710255² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18718710255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1408254 + ... + 1421483.

It is an arithmetic number, because the mean of its divisors is an integer number (806475330).

Almost surely, 2^18718710255 is an apocalyptic number.

18718710255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18718710255 is an abundant number, since it is smaller than the sum of its proper divisors (19992105585).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18718710255 is a wasteful number, since it uses less digits than its factorization.

18718710255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829765 (or 2829752 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 45.

The spelling of 18718710255 in words is "eighteen billion, seven hundred eighteen million, seven hundred ten thousand, two hundred fifty-five".