2005445051209 has 8 divisors (see below), whose sum is σ = 2032794466560. Its totient is φ = 1978247156736.

The previous prime is 2005445051189. The next prime is 2005445051261. The reversal of 2005445051209 is 9021505445002.

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

It is a cyclic number.

It is not a de Polignac number, because 2005445051209 - 2¹⁷ = 2005444920137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005445051809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37853569 + ... + 37906510.

It is an arithmetic number, because the mean of its divisors is an integer number (254099308320).

Almost surely, 2^{2005445051209} is an apocalyptic number.

It is an amenable number.

2005445051209 is a deficient number, since it is larger than the sum of its proper divisors (27349415351).

2005445051209 is a wasteful number, since it uses less digits than its factorization.

2005445051209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75760439.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 2005445051209 in words is "two trillion, five billion, four hundred forty-five million, fifty-one thousand, two hundred nine".