1320220410545 has 16 divisors (see below), whose sum is σ = 1667775180672. Its totient is φ = 1001315293440.

The previous prime is 1320220410527. The next prime is 1320220410559. The reversal of 1320220410545 is 5450140220231.

It is not a de Polignac number, because 1320220410545 - 2¹⁶ = 1320220345009 is a prime.

It is a Duffinian 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, 50784251 + ... + 50810240.

It is an arithmetic number, because the mean of its divisors is an integer number (104235948792).

Almost surely, 2^{1320220410545} is an apocalyptic number.

It is an amenable number.

1320220410545 is a deficient number, since it is larger than the sum of its proper divisors (347554770127).

1320220410545 is a wasteful number, since it uses less digits than its factorization.

1320220410545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101594632.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 1320220410545 its reverse (5450140220231), we get a palindrome (6770360630776).

The spelling of 1320220410545 in words is "one trillion, three hundred twenty billion, two hundred twenty million, four hundred ten thousand, five hundred forty-five".