2005394471339 has 16 divisors (see below), whose sum is σ = 2434027286016. Its totient is φ = 1612909584000.

The previous prime is 2005394471321. The next prime is 2005394471387. The reversal of 2005394471339 is 9331744935002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005394471339 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2005394471309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25416887 + ... + 25495664.

It is an arithmetic number, because the mean of its divisors is an integer number (152126705376).

Almost surely, 2^{2005394471339} is an apocalyptic number.

2005394471339 is a deficient number, since it is larger than the sum of its proper divisors (428632814677).

2005394471339 is a wasteful number, since it uses less digits than its factorization.

2005394471339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50912906.

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 2005394471339 in words is "two trillion, five billion, three hundred ninety-four million, four hundred seventy-one thousand, three hundred thirty-nine".