2011999967 has 4 divisors (see below), whose sum is σ = 2013369216. Its totient is φ = 2010630720.

The previous prime is 2011999933. The next prime is 2011999991. The reversal of 2011999967 is 7699991102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011999967 - 2⁸ = 2011999711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011999907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682418 + ... + 685359.

It is an arithmetic number, because the mean of its divisors is an integer number (503342304).

Almost surely, 2^2011999967 is an apocalyptic number.

2011999967 is a deficient number, since it is larger than the sum of its proper divisors (1369249).

2011999967 is a wasteful number, since it uses less digits than its factorization.

2011999967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369248.

The product of its (nonzero) digits is 551124, while the sum is 53.

The square root of 2011999967 is about 44855.3226161623. The cubic root of 2011999967 is about 1262.4358621405.

The spelling of 2011999967 in words is "two billion, eleven million, nine hundred ninety-nine thousand, nine hundred sixty-seven".