545440305323 has 4 divisors (see below), whose sum is σ = 545447135880. Its totient is φ = 545433474768.

The previous prime is 545440305299. The next prime is 545440305353. The reversal of 545440305323 is 323503044545.

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

It is a cyclic number.

It is not a de Polignac number, because 545440305323 - 2²² = 545436111019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545440305353) 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, 3294065 + ... + 3455682.

It is an arithmetic number, because the mean of its divisors is an integer number (136361783970).

Almost surely, 2^545440305323 is an apocalyptic number.

545440305323 is a deficient number, since it is larger than the sum of its proper divisors (6830557).

545440305323 is an equidigital number, since it uses as much as digits as its factorization.

545440305323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830556.

The product of its (nonzero) digits is 432000, while the sum is 38.

Adding to 545440305323 its reverse (323503044545), we get a palindrome (868943349868).

The spelling of 545440305323 in words is "five hundred forty-five billion, four hundred forty million, three hundred five thousand, three hundred twenty-three".