2171441445 has 8 divisors (see below), whose sum is σ = 3474306336. Its totient is φ = 1158102096.

The previous prime is 2171441423. The next prime is 2171441513. The reversal of 2171441445 is 5441441712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2171441445 - 2⁵ = 2171441413 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72381367 + ... + 72381396.

It is an arithmetic number, because the mean of its divisors is an integer number (434288292).

Almost surely, 2^2171441445 is an apocalyptic number.

It is an amenable number.

2171441445 is a deficient number, since it is larger than the sum of its proper divisors (1302864891).

2171441445 is a wasteful number, since it uses less digits than its factorization.

2171441445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144762771.

The product of its digits is 17920, while the sum is 33.

The square root of 2171441445 is about 46598.7279332816. The cubic root of 2171441445 is about 1294.9391890667.

The spelling of 2171441445 in words is "two billion, one hundred seventy-one million, four hundred forty-one thousand, four hundred forty-five".