16089173856 has 576 divisors, whose sum is σ = 58471096320. Its totient is φ = 4249428480.

The previous prime is 16089173843. The next prime is 16089173861. The reversal of 16089173856 is 65837198061.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48607611 + ... + 48607941.

It is an arithmetic number, because the mean of its divisors is an integer number (101512320).

Almost surely, 2^16089173856 is an apocalyptic number.

16089173856 is a gapful number since it is divisible by the number (16) 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 16089173856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29235548160).

16089173856 is an abundant number, since it is smaller than the sum of its proper divisors (42381922464).

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

16089173856 is a wasteful number, since it uses less digits than its factorization.

16089173856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 16089173856 in words is "sixteen billion, eighty-nine million, one hundred seventy-three thousand, eight hundred fifty-six".