2011999959 has 8 divisors (see below), whose sum is σ = 2980740720. Its totient is φ = 1341333288.

The previous prime is 2011999933. The next prime is 2011999991. The reversal of 2011999959 is 9599991102.

It is not a de Polignac number, because 2011999959 - 2¹⁶ = 2011934423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011999919) 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, 37259232 + ... + 37259285.

It is an arithmetic number, because the mean of its divisors is an integer number (372592590).

Almost surely, 2^2011999959 is an apocalyptic number.

2011999959 is a deficient number, since it is larger than the sum of its proper divisors (968740761).

2011999959 is an equidigital number, since it uses as much as digits as its factorization.

2011999959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74518526 (or 74518520 counting only the distinct ones).

The product of its (nonzero) digits is 590490, while the sum is 54.

The square root of 2011999959 is about 44855.3225269867. The cubic root of 2011999959 is about 1262.4358604673.

The spelling of 2011999959 in words is "two billion, eleven million, nine hundred ninety-nine thousand, nine hundred fifty-nine".