321350538545 has 4 divisors (see below), whose sum is σ = 385620646260. Its totient is φ = 257080430832.

The previous prime is 321350538539. The next prime is 321350538559. The reversal of 321350538545 is 545835053123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45532304689 + 275818233856 = 213383^2 + 525184^2 .

It is a cyclic number.

It is not a de Polignac number, because 321350538545 - 2¹⁴ = 321350522161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321350538496 and 321350538505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32135053850 + ... + 32135053859.

It is an arithmetic number, because the mean of its divisors is an integer number (96405161565).

Almost surely, 2^321350538545 is an apocalyptic number.

It is an amenable number.

321350538545 is a deficient number, since it is larger than the sum of its proper divisors (64270107715).

321350538545 is an equidigital number, since it uses as much as digits as its factorization.

321350538545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64270107714.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 321350538545 in words is "three hundred twenty-one billion, three hundred fifty million, five hundred thirty-eight thousand, five hundred forty-five".