18051128851 has 32 divisors (see below), whose sum is σ = 21539773440. Its totient is φ = 14800496256.

The previous prime is 18051128831. The next prime is 18051128857. The reversal of 18051128851 is 15882115081.

It is not a de Polignac number, because 18051128851 - 2¹⁹ = 18050604563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18051128857) 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 31 ways as a sum of consecutive naturals, for example, 15520596 + ... + 15521758.

It is an arithmetic number, because the mean of its divisors is an integer number (673117920).

Almost surely, 2^18051128851 is an apocalyptic number.

18051128851 is a deficient number, since it is larger than the sum of its proper divisors (3488644589).

18051128851 is a wasteful number, since it uses less digits than its factorization.

18051128851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843.

The product of its (nonzero) digits is 25600, while the sum is 40.

The spelling of 18051128851 in words is "eighteen billion, fifty-one million, one hundred twenty-eight thousand, eight hundred fifty-one".