16428425616 has 160 divisors (see below), whose sum is σ = 47798190720. Its totient is φ = 5401990656.

The previous prime is 16428425597. The next prime is 16428425623. The reversal of 16428425616 is 61652482461.

It is a happy number.

16428425616 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 8 + 4 + 25 + 616 = 666.

16428425616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13543026 + ... + 13544238.

It is an arithmetic number, because the mean of its divisors is an integer number (298738692).

Almost surely, 2^16428425616 is an apocalyptic number.

16428425616 is a gapful number since it is divisible by the number (16) 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 16428425616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23899095360).

16428425616 is an abundant number, since it is smaller than the sum of its proper divisors (31369765104).

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

16428425616 is a wasteful number, since it uses less digits than its factorization.

16428425616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1618 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 16428425616 in words is "sixteen billion, four hundred twenty-eight million, four hundred twenty-five thousand, six hundred sixteen".