16997756431488 has 256 divisors, whose sum is σ = 54340406323200. Its totient is φ = 4598840918016.

The previous prime is 16997756431423. The next prime is 16997756431493. The reversal of 16997756431488 is 88413465779961.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116013445 + ... + 116159867.

It is an arithmetic number, because the mean of its divisors is an integer number (212267212200).

Almost surely, 2^{16997756431488} 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 16997756431488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27170203161600).

16997756431488 is an abundant number, since it is smaller than the sum of its proper divisors (37342649891712).

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

16997756431488 is a wasteful number, since it uses less digits than its factorization.

16997756431488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148739 (or 148727 counting only the distinct ones).

The product of its digits is 2194698240, while the sum is 78.

The spelling of 16997756431488 in words is "sixteen trillion, nine hundred ninety-seven billion, seven hundred fifty-six million, four hundred thirty-one thousand, four hundred eighty-eight".