1345220051205 has 16 divisors (see below), whose sum is σ = 2167836632640. Its totient is φ = 712289177088.

The previous prime is 1345220051117. The next prime is 1345220051257. The reversal of 1345220051205 is 5021500225431.

It is not a de Polignac number, because 1345220051205 - 2²⁹ = 1344683180293 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 15 ways as a sum of consecutive naturals, for example, 322592652 + ... + 322596821.

It is an arithmetic number, because the mean of its divisors is an integer number (135489789540).

Almost surely, 2^{1345220051205} is an apocalyptic number.

1345220051205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345220051205 is a deficient number, since it is larger than the sum of its proper divisors (822616581435).

1345220051205 is a wasteful number, since it uses less digits than its factorization.

1345220051205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645189620.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1345220051205 its reverse (5021500225431), we get a palindrome (6366720276636).

The spelling of 1345220051205 in words is "one trillion, three hundred forty-five billion, two hundred twenty million, fifty-one thousand, two hundred five".