16871978592 has 240 divisors, whose sum is σ = 57559138560. Its totient is φ = 4748274432.

The previous prime is 16871978561. The next prime is 16871978597. The reversal of 16871978592 is 29587917861.

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 (16871978597) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1208709 + ... + 1222587.

It is an arithmetic number, because the mean of its divisors is an integer number (239829744).

Almost surely, 2^16871978592 is an apocalyptic number.

16871978592 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 16871978592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779569280).

16871978592 is an abundant number, since it is smaller than the sum of its proper divisors (40687159968).

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

16871978592 is a wasteful number, since it uses less digits than its factorization.

16871978592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13975 (or 13958 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 63.

The spelling of 16871978592 in words is "sixteen billion, eight hundred seventy-one million, nine hundred seventy-eight thousand, five hundred ninety-two".