16645353250 has 16 divisors (see below), whose sum is σ = 31160101752. Its totient is φ = 6658141200.

The previous prime is 16645353233. The next prime is 16645353289. The reversal of 16645353250 is 5235354661.

16645353250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5906383609 + 10738969641 = 76853^2 + 103629^2 .

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 7 ways as a sum of consecutive naturals, for example, 33290457 + ... + 33290956.

Almost surely, 2^16645353250 is an apocalyptic number.

16645353250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16645353250 is a deficient number, since it is larger than the sum of its proper divisors (14514748502).

16645353250 is an equidigital number, since it uses as much as digits as its factorization.

16645353250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66581430 (or 66581420 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 16645353250 in words is "sixteen billion, six hundred forty-five million, three hundred fifty-three thousand, two hundred fifty".