16744642544 has 80 divisors (see below), whose sum is σ = 39141185280. Its totient is φ = 6779013120.

The previous prime is 16744642511. The next prime is 16744642547. The reversal of 16744642544 is 44524644761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16744642547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740039 + ... + 762329.

It is an arithmetic number, because the mean of its divisors is an integer number (489264816).

Almost surely, 2^16744642544 is an apocalyptic number.

16744642544 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 16744642544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19570592640).

16744642544 is an abundant number, since it is smaller than the sum of its proper divisors (22396542736).

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

16744642544 is a wasteful number, since it uses less digits than its factorization.

16744642544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22678 (or 22672 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 47.

The spelling of 16744642544 in words is "sixteen billion, seven hundred forty-four million, six hundred forty-two thousand, five hundred forty-four".