16764216368320 has 224 divisors, whose sum is σ = 42802873804800. Its totient is φ = 6234877845504.

The previous prime is 16764216368309. The next prime is 16764216368323. The reversal of 16764216368320 is 2386361246761.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16764216368323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221292369 + ... + 221368111.

Almost surely, 2^{16764216368320} is an apocalyptic number.

16764216368320 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 16764216368320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21401436902400).

16764216368320 is an abundant number, since it is smaller than the sum of its proper divisors (26038657436480).

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

16764216368320 is a wasteful number, since it uses less digits than its factorization.

16764216368320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76455 (or 76445 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 16764216368320 in words is "sixteen trillion, seven hundred sixty-four billion, two hundred sixteen million, three hundred sixty-eight thousand, three hundred twenty".