330505827805 has 4 divisors (see below), whose sum is σ = 396606993372. Its totient is φ = 264404662240.

The previous prime is 330505827721. The next prime is 330505827809. The reversal of 330505827805 is 508728505033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508728505033 = 7 ⋅72675500719.

It can be written as a sum of positive squares in 2 ways, for example, as 197166193156 + 133339634649 = 444034^2 + 365157^2 .

It is a de Polignac number, because none of the positive numbers 2^k-330505827805 is a prime.

It is a super-2 number, since 2×330505827805² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330505827809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33050582776 + ... + 33050582785.

It is an arithmetic number, because the mean of its divisors is an integer number (99151748343).

Almost surely, 2^330505827805 is an apocalyptic number.

It is an amenable number.

330505827805 is a deficient number, since it is larger than the sum of its proper divisors (66101165567).

330505827805 is an equidigital number, since it uses as much as digits as its factorization.

330505827805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66101165566.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 330505827805 in words is "three hundred thirty billion, five hundred five million, eight hundred twenty-seven thousand, eight hundred five".