16645018936 has 160 divisors (see below), whose sum is σ = 39527712000. Its totient is φ = 6531598080.

The previous prime is 16645018931. The next prime is 16645018979. The reversal of 16645018936 is 63981054661.

16645018936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 16645018936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16645018931) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 47693290 + ... + 47693638.

It is an arithmetic number, because the mean of its divisors is an integer number (247048200).

Almost surely, 2^16645018936 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 16645018936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19763856000).

16645018936 is an abundant number, since it is smaller than the sum of its proper divisors (22882693064).

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

16645018936 is a wasteful number, since it uses less digits than its factorization.

16645018936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 16645018936 in words is "sixteen billion, six hundred forty-five million, eighteen thousand, nine hundred thirty-six".