16454443264 has 72 divisors (see below), whose sum is σ = 37567575360. Its totient is φ = 7046105088.

The previous prime is 16454443241. The next prime is 16454443267. The reversal of 16454443264 is 46234445461.

It is a self number, because there is not a number n which added to its sum of digits gives 16454443264.

It is not an unprimeable number, because it can be changed into a prime (16454443267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726202 + ... + 2732230.

It is an arithmetic number, because the mean of its divisors is an integer number (521771880).

Almost surely, 2^16454443264 is an apocalyptic number.

16454443264 is a gapful number since it is divisible by the number (14) 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 16454443264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18783787680).

16454443264 is an abundant number, since it is smaller than the sum of its proper divisors (21113132096).

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

16454443264 is an equidigital number, since it uses as much as digits as its factorization.

16454443264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575 (or 7561 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 43.

The spelling of 16454443264 in words is "sixteen billion, four hundred fifty-four million, four hundred forty-three thousand, two hundred sixty-four".