16244421144 has 128 divisors (see below), whose sum is σ = 47147028480. Its totient is φ = 4568054400.

The previous prime is 16244421101. The next prime is 16244421169. The reversal of 16244421144 is 44112444261.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 13871679 + ... + 13872849.

It is an arithmetic number, because the mean of its divisors is an integer number (368336160).

Almost surely, 2^16244421144 is an apocalyptic number.

16244421144 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 16244421144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23573514240).

16244421144 is an abundant number, since it is smaller than the sum of its proper divisors (30902607336).

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

16244421144 is a wasteful number, since it uses less digits than its factorization.

16244421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2417 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The spelling of 16244421144 in words is "sixteen billion, two hundred forty-four million, four hundred twenty-one thousand, one hundred forty-four".