16218683264 has 96 divisors (see below), whose sum is σ = 39797062560. Its totient is φ = 6541946880.

The previous prime is 16218683263. The next prime is 16218683291. The reversal of 16218683264 is 46238681261.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218683263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30569 + ... + 182679.

It is an arithmetic number, because the mean of its divisors is an integer number (414552735).

Almost surely, 2^16218683264 is an apocalyptic number.

16218683264 is a gapful number since it is divisible by the number (14) 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 16218683264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19898531280).

16218683264 is an abundant number, since it is smaller than the sum of its proper divisors (23578379296).

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

16218683264 is a wasteful number, since it uses less digits than its factorization.

16218683264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152156 (or 152137 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The spelling of 16218683264 in words is "sixteen billion, two hundred eighteen million, six hundred eighty-three thousand, two hundred sixty-four".