1320204333545 has 16 divisors (see below), whose sum is σ = 1653269208192. Its totient is φ = 1010155449600.

The previous prime is 1320204333529. The next prime is 1320204333559. The reversal of 1320204333545 is 5453334020231.

It is not a de Polignac number, because 1320204333545 - 2⁴ = 1320204333529 is a prime.

It is a super-2 number, since 2×1320204333545² (a number of 25 digits) contains 22 as substring.

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, 844370 + ... + 1831220.

It is an arithmetic number, because the mean of its divisors is an integer number (103329325512).

Almost surely, 2^{1320204333545} is an apocalyptic number.

It is an amenable number.

1320204333545 is a deficient number, since it is larger than the sum of its proper divisors (333064874647).

1320204333545 is a wasteful number, since it uses less digits than its factorization.

1320204333545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998512.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 1320204333545 its reverse (5453334020231), we get a palindrome (6773538353776).

The spelling of 1320204333545 in words is "one trillion, three hundred twenty billion, two hundred four million, three hundred thirty-three thousand, five hundred forty-five".