16989374657280 has 864 divisors, whose sum is σ = 60616429429248. Its totient is φ = 4046677606400.

The previous prime is 16989374657237. The next prime is 16989374657309. The reversal of 16989374657280 is 8275647398961.

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, 3343704340 + ... + 3343709420.

It is an arithmetic number, because the mean of its divisors is an integer number (70157904432).

It is a 1-persistent number, because it is pandigital, but 2⋅16989374657280 = 33978749314560 is not.

Almost surely, 2^{16989374657280} is an apocalyptic number.

16989374657280 is a gapful number since it is divisible by the number (10) 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 16989374657280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30308214714624).

16989374657280 is an abundant number, since it is smaller than the sum of its proper divisors (43627054771968).

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

16989374657280 is a wasteful number, since it uses less digits than its factorization.

16989374657280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293 (or 5262 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 75.

The spelling of 16989374657280 in words is "sixteen trillion, nine hundred eighty-nine billion, three hundred seventy-four million, six hundred fifty-seven thousand, two hundred eighty".