18466837056 has 112 divisors (see below), whose sum is σ = 54506652480. Its totient is φ = 6130944000.

The previous prime is 18466837043. The next prime is 18466837073. The reversal of 18466837056 is 65073866481.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18466836993 and 18466837011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412440 + ... + 455016.

It is an arithmetic number, because the mean of its divisors is an integer number (486666540).

Almost surely, 2^18466837056 is an apocalyptic number.

18466837056 is a gapful number since it is divisible by the number (16) 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 18466837056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27253326240).

18466837056 is an abundant number, since it is smaller than the sum of its proper divisors (36039815424).

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

18466837056 is a wasteful number, since it uses less digits than its factorization.

18466837056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42849 (or 42833 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 18466837056 in words is "eighteen billion, four hundred sixty-six million, eight hundred thirty-seven thousand, fifty-six".