1321351650305 has 32 divisors (see below), whose sum is σ = 1733902899840. Its totient is φ = 962602583040.

The previous prime is 1321351650301. The next prime is 1321351650313. The reversal of 1321351650305 is 5030561531231.

It is not a de Polignac number, because 1321351650305 - 2² = 1321351650301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321351650301) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 610631 + ... + 1736540.

It is an arithmetic number, because the mean of its divisors is an integer number (54184465620).

Almost surely, 2^{1321351650305} is an apocalyptic number.

It is an amenable number.

1321351650305 is a deficient number, since it is larger than the sum of its proper divisors (412551249535).

1321351650305 is a wasteful number, since it uses less digits than its factorization.

1321351650305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347409.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 1321351650305 in words is "one trillion, three hundred twenty-one billion, three hundred fifty-one million, six hundred fifty thousand, three hundred five".