18122127852 has 18 divisors (see below), whose sum is σ = 42286053124. Its totient is φ = 6040553840.

The previous prime is 18122127847. The next prime is 18122127887. The reversal of 18122127852 is 25872122181.

It is a self number, because there is not a number n which added to its sum of digits gives 18122127852.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446902 + ... + 485762.

Almost surely, 2^18122127852 is an apocalyptic number.

18122127852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18122127852 is an abundant number, since it is smaller than the sum of its proper divisors (24163925272).

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

18122127852 is an frugal number, since it uses more digits than its factorization.

18122127852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77729 (or 38866 counting only the distinct ones).

The product of its digits is 35840, while the sum is 39.

The spelling of 18122127852 in words is "eighteen billion, one hundred twenty-two million, one hundred twenty-seven thousand, eight hundred fifty-two".