16645140375 has 64 divisors (see below), whose sum is σ = 28023255936. Its totient is φ = 8773632000.

The previous prime is 16645140349. The next prime is 16645140431. The reversal of 16645140375 is 57304154661.

16645140375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16645140375 - 2¹¹ = 16645138327 is a prime.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 14435799 + ... + 14436951.

It is an arithmetic number, because the mean of its divisors is an integer number (437863374).

Almost surely, 2^16645140375 is an apocalyptic number.

16645140375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16645140375 is a deficient number, since it is larger than the sum of its proper divisors (11378115561).

16645140375 is a wasteful number, since it uses less digits than its factorization.

16645140375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 16645140375 in words is "sixteen billion, six hundred forty-five million, one hundred forty thousand, three hundred seventy-five".