18113552857728 has 128 divisors (see below), whose sum is σ = 54703398129600. Its totient is φ = 5897435765760.

The previous prime is 18113552857657. The next prime is 18113552857733. The reversal of 18113552857728 is 82775825531181.

18113552857728 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 3 + 5 + 52 + 8 + 577 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60795463 + ... + 61092678.

Almost surely, 2^{18113552857728} is an apocalyptic number.

18113552857728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18113552857728 is an abundant number, since it is smaller than the sum of its proper divisors (36589845271872).

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

18113552857728 is a wasteful number, since it uses less digits than its factorization.

18113552857728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121888207 (or 121888189 counting only the distinct ones).

The product of its digits is 37632000, while the sum is 63.

The spelling of 18113552857728 in words is "eighteen trillion, one hundred thirteen billion, five hundred fifty-two million, eight hundred fifty-seven thousand, seven hundred twenty-eight".