16798399488 has 352 divisors, whose sum is σ = 54330982720. Its totient is φ = 5159780352.

The previous prime is 16798399481. The next prime is 16798399493. The reversal of 16798399488 is 88499389761.

16798399488 is a `hidden beast` number, since 1 + 67 + 9 + 83 + 9 + 9 + 488 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16798399481) 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, 29113056 + ... + 29113632.

Almost surely, 2^16798399488 is an apocalyptic number.

16798399488 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 16798399488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27165491360).

16798399488 is an abundant number, since it is smaller than the sum of its proper divisors (37532583232).

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

16798399488 is an frugal number, since it uses more digits than its factorization.

16798399488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 595 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 72.

The spelling of 16798399488 in words is "sixteen billion, seven hundred ninety-eight million, three hundred ninety-nine thousand, four hundred eighty-eight".