16998336720 has 240 divisors, whose sum is σ = 61013684160. Its totient is φ = 4226052096.

The previous prime is 16998336713. The next prime is 16998336721. The reversal of 16998336720 is 2763389961.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16998336721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1303191 + ... + 1316169.

It is an arithmetic number, because the mean of its divisors is an integer number (254223684).

Almost surely, 2^16998336720 is an apocalyptic number.

16998336720 is a gapful number since it is divisible by the number (10) 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 16998336720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30506842080).

16998336720 is an abundant number, since it is smaller than the sum of its proper divisors (44015347440).

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

16998336720 is a wasteful number, since it uses less digits than its factorization.

16998336720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13122 (or 13113 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 16998336720 in words is "sixteen billion, nine hundred ninety-eight million, three hundred thirty-six thousand, seven hundred twenty".