16818858144 has 168 divisors, whose sum is σ = 54159531552. Its totient is φ = 5096545920.

The previous prime is 16818858143. The next prime is 16818858179. The reversal of 16818858144 is 44185881861.

16818858144 is a `hidden beast` number, since 1 + 6 + 8 + 18 + 8 + 581 + 44 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (16818858143) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 223837 + ... + 289379.

It is an arithmetic number, because the mean of its divisors is an integer number (322378164).

Almost surely, 2^16818858144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16818858144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27079765776).

16818858144 is an abundant number, since it is smaller than the sum of its proper divisors (37340673408).

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

16818858144 is an equidigital number, since it uses as much as digits as its factorization.

16818858144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65582 (or 65559 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 54.

The spelling of 16818858144 in words is "sixteen billion, eight hundred eighteen million, eight hundred fifty-eight thousand, one hundred forty-four".