16992543856 has 20 divisors (see below), whose sum is σ = 33985088704. Its totient is φ = 8222198400.

The previous prime is 16992543811. The next prime is 16992543857. The reversal of 16992543856 is 65834529961.

16992543856 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 16992543856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16992543857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17129085 + ... + 17130076.

Almost surely, 2^16992543856 is an apocalyptic number.

16992543856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16992543856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16992543856 is a wasteful number, since it uses less digits than its factorization.

16992543856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34259200 (or 34259194 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 58.

The spelling of 16992543856 in words is "sixteen billion, nine hundred ninety-two million, five hundred forty-three thousand, eight hundred fifty-six".