16439002920 has 256 divisors, whose sum is σ = 57839904000. Its totient is φ = 4141559808.

The previous prime is 16439002883. The next prime is 16439002961. The reversal of 16439002920 is 2920093461.

16439002920 is a `hidden beast` number, since 1 + 643 + 9 + 0 + 0 + 2 + 9 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9376764 + ... + 9378516.

It is an arithmetic number, because the mean of its divisors is an integer number (225937125).

Almost surely, 2^16439002920 is an apocalyptic number.

16439002920 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 16439002920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28919952000).

16439002920 is an abundant number, since it is smaller than the sum of its proper divisors (41400901080).

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

16439002920 is a wasteful number, since it uses less digits than its factorization.

16439002920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249 (or 2239 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 16439002920 in words is "sixteen billion, four hundred thirty-nine million, two thousand, nine hundred twenty".