16385255040 has 768 divisors, whose sum is σ = 67513098240. Its totient is φ = 3341721600.

The previous prime is 16385254999. The next prime is 16385255057. The reversal of 16385255040 is 4055258361.

It is a self number, because there is not a number n which added to its sum of digits gives 16385255040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73476369 + ... + 73476591.

It is an arithmetic number, because the mean of its divisors is an integer number (87907680).

Almost surely, 2^16385255040 is an apocalyptic number.

16385255040 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 16385255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33756549120).

16385255040 is an abundant number, since it is smaller than the sum of its proper divisors (51127843200).

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

16385255040 is a wasteful number, since it uses less digits than its factorization.

16385255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 16385255040 in words is "sixteen billion, three hundred eighty-five million, two hundred fifty-five thousand, forty".