16533798864416 has 192 divisors, whose sum is σ = 35254236745728. Its totient is φ = 7612272442368.

The previous prime is 16533798864337. The next prime is 16533798864433. The reversal of 16533798864416 is 61446889733561.

It is a super-2 number, since 2×16533798864416² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16533798864416.

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, 4563563981 + ... + 4563567603.

It is an arithmetic number, because the mean of its divisors is an integer number (183615816384).

Almost surely, 2^{16533798864416} is an apocalyptic number.

16533798864416 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 16533798864416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17627118372864).

16533798864416 is an abundant number, since it is smaller than the sum of its proper divisors (18720437881312).

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

16533798864416 is a wasteful number, since it uses less digits than its factorization.

16533798864416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423 (or 5415 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 71.

The spelling of 16533798864416 in words is "sixteen trillion, five hundred thirty-three billion, seven hundred ninety-eight million, eight hundred sixty-four thousand, four hundred sixteen".