2168361582011 has 4 divisors (see below), whose sum is σ = 2184189038952. Its totient is φ = 2152534125072.

The previous prime is 2168361581993. The next prime is 2168361582047. The reversal of 2168361582011 is 1102851638612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168361582011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168361585011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7913728265 + ... + 7913728538.

It is an arithmetic number, because the mean of its divisors is an integer number (546047259738).

Almost surely, 2^{2168361582011} is an apocalyptic number.

2168361582011 is a deficient number, since it is larger than the sum of its proper divisors (15827456941).

2168361582011 is a wasteful number, since it uses less digits than its factorization.

2168361582011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15827456940.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 2168361582011 in words is "two trillion, one hundred sixty-eight billion, three hundred sixty-one million, five hundred eighty-two thousand, eleven".