14220205645 has 16 divisors (see below), whose sum is σ = 18159763248. Its totient is φ = 10652615680.

The previous prime is 14220205633. The next prime is 14220205667. The reversal of 14220205645 is 54650202241.

It can be written as a sum of positive squares in 8 ways, for example, as 3615737161 + 10604468484 = 60131^2 + 102978^2 .

It is not a de Polignac number, because 14220205645 - 2⁹ = 14220205133 is a prime.

It is a super-3 number, since 3×14220205645³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407866 + ... + 441355.

It is an arithmetic number, because the mean of its divisors is an integer number (1134985203).

Almost surely, 2^14220205645 is an apocalyptic number.

It is an amenable number.

14220205645 is a deficient number, since it is larger than the sum of its proper divisors (3939557603).

14220205645 is a wasteful number, since it uses less digits than its factorization.

14220205645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849440.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 14220205645 its reverse (54650202241), we get a palindrome (68870407886).

The spelling of 14220205645 in words is "fourteen billion, two hundred twenty million, two hundred five thousand, six hundred forty-five".