18775027008 has 168 divisors, whose sum is σ = 56035824936. Its totient is φ = 6005145600.

The previous prime is 18775027003. The next prime is 18775027009. The reversal of 18775027008 is 80072057781.

18775027008 is a `hidden beast` number, since 1 + 8 + 77 + 502 + 70 + 0 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 309478464 + 18465548544 = 17592^2 + 135888^2 .

It is a super-2 number, since 2×18775027008² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18775027003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1434060 + ... + 1447092.

It is an arithmetic number, because the mean of its divisors is an integer number (333546577).

Almost surely, 2^18775027008 is an apocalyptic number.

18775027008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18775027008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28017912468).

18775027008 is an abundant number, since it is smaller than the sum of its proper divisors (37260797928).

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

18775027008 is a wasteful number, since it uses less digits than its factorization.

18775027008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13153 (or 13140 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 45.

The spelling of 18775027008 in words is "eighteen billion, seven hundred seventy-five million, twenty-seven thousand, eight".