16994099808 has 192 divisors, whose sum is σ = 58474967040. Its totient is φ = 4698777600.

The previous prime is 16994099791. The next prime is 16994099809. The reversal of 16994099808 is 80899049961.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16994099809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142168 + ... + 232808.

It is an arithmetic number, because the mean of its divisors is an integer number (304557120).

Almost surely, 2^16994099808 is an apocalyptic number.

16994099808 is a gapful number since it is divisible by the number (18) 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 16994099808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29237483520).

16994099808 is an abundant number, since it is smaller than the sum of its proper divisors (41480867232).

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

16994099808 is a wasteful number, since it uses less digits than its factorization.

16994099808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90698 (or 90684 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The spelling of 16994099808 in words is "sixteen billion, nine hundred ninety-four million, ninety-nine thousand, eight hundred eight".