16993291689792 has 448 divisors, whose sum is σ = 55069118208000. Its totient is φ = 5095659663360.

The previous prime is 16993291689791. The next prime is 16993291689827. The reversal of 16993291689792 is 29798619239961.

16993291689792 is a `hidden beast` number, since 1 + 69 + 9 + 329 + 1 + 68 + 97 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16993291689791) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3655255084 + ... + 3655259732.

Almost surely, 2^{16993291689792} is an apocalyptic number.

16993291689792 is a gapful number since it is divisible by the number (12) 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 16993291689792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27534559104000).

16993291689792 is an abundant number, since it is smaller than the sum of its proper divisors (38075826518208).

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

16993291689792 is a wasteful number, since it uses less digits than its factorization.

16993291689792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651 (or 6635 counting only the distinct ones).

The product of its digits is 1428513408, while the sum is 81.

The spelling of 16993291689792 in words is "sixteen trillion, nine hundred ninety-three billion, two hundred ninety-one million, six hundred eighty-nine thousand, seven hundred ninety-two".