16021129344 has 256 divisors, whose sum is σ = 49586688000. Its totient is φ = 4535193600.

The previous prime is 16021129337. The next prime is 16021129349. The reversal of 16021129344 is 44392112061.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (16021129349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3795267 + ... + 3799485.

It is an arithmetic number, because the mean of its divisors is an integer number (193698000).

Almost surely, 2^16021129344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16021129344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24793344000).

16021129344 is an abundant number, since it is smaller than the sum of its proper divisors (33565558656).

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

16021129344 is a wasteful number, since it uses less digits than its factorization.

16021129344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4295 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 16021129344 in words is "sixteen billion, twenty-one million, one hundred twenty-nine thousand, three hundred forty-four".