2005718808611 has 8 divisors (see below), whose sum is σ = 2305055934720. Its totient is φ = 1709583149448.

The previous prime is 2005718808557. The next prime is 2005718808617. The reversal of 2005718808611 is 1168088175002.

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 2005718808611 - 2²² = 2005714614307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005718808617) 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, 800365391 + ... + 800367896.

It is an arithmetic number, because the mean of its divisors is an integer number (288131991840).

Almost surely, 2^{2005718808611} is an apocalyptic number.

2005718808611 is a deficient number, since it is larger than the sum of its proper divisors (299337126109).

2005718808611 is a wasteful number, since it uses less digits than its factorization.

2005718808611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600733473.

The product of its (nonzero) digits is 215040, while the sum is 47.

The spelling of 2005718808611 in words is "two trillion, five billion, seven hundred eighteen million, eight hundred eight thousand, six hundred eleven".