16999898544 has 320 divisors, whose sum is σ = 53996544000. Its totient is φ = 5097185280.

The previous prime is 16999898477. The next prime is 16999898647. The reversal of 16999898544 is 44589899961.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20261677 + ... + 20262515.

It is an arithmetic number, because the mean of its divisors is an integer number (168739200).

Almost surely, 2^16999898544 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 16999898544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26998272000).

16999898544 is an abundant number, since it is smaller than the sum of its proper divisors (36996645456).

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

16999898544 is a wasteful number, since it uses less digits than its factorization.

16999898544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 981 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 16999898544 in words is "sixteen billion, nine hundred ninety-nine million, eight hundred ninety-eight thousand, five hundred forty-four".