14004001645 has 4 divisors (see below), whose sum is σ = 16804801980. Its totient is φ = 11203201312.

The previous prime is 14004001639. The next prime is 14004001663. The reversal of 14004001645 is 54610040041.

14004001645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6894645156 + 7109356489 = 83034^2 + 84317^2 .

It is a cyclic number.

It is not a de Polignac number, because 14004001645 - 2²¹ = 14001904493 is a prime.

It is a super-3 number, since 3×14004001645³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 3 ways as a sum of consecutive naturals, for example, 1400400160 + ... + 1400400169.

It is an arithmetic number, because the mean of its divisors is an integer number (4201200495).

Almost surely, 2^14004001645 is an apocalyptic number.

It is an amenable number.

14004001645 is a deficient number, since it is larger than the sum of its proper divisors (2800800335).

14004001645 is an equidigital number, since it uses as much as digits as its factorization.

14004001645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800800334.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 14004001645 its reverse (54610040041), we get a palindrome (68614041686).

The spelling of 14004001645 in words is "fourteen billion, four million, one thousand, six hundred forty-five".