545441223309 has 4 divisors (see below), whose sum is σ = 727254964416. Its totient is φ = 363627482204.

The previous prime is 545441223281. The next prime is 545441223373. The reversal of 545441223309 is 903322144545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545441223309 - 2⁵ = 545441223277 is a prime.

It is a super-3 number, since 3×545441223309³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545441223709) 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, 90906870549 + ... + 90906870554.

It is an arithmetic number, because the mean of its divisors is an integer number (181813741104).

Almost surely, 2^545441223309 is an apocalyptic number.

It is an amenable number.

545441223309 is a deficient number, since it is larger than the sum of its proper divisors (181813741107).

545441223309 is a wasteful number, since it uses less digits than its factorization.

545441223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181813741106.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 545441223309 in words is "five hundred forty-five billion, four hundred forty-one million, two hundred twenty-three thousand, three hundred nine".