6011991105 has 8 divisors (see below), whose sum is σ = 9619185792. Its totient is φ = 3206395248.

The previous prime is 6011991079. The next prime is 6011991127. The reversal of 6011991105 is 5011991106.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6011991105 - 2¹⁰ = 6011990081 is a prime.

It is a super-2 number, since 2×6011991105² = 72288074093198242050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200399689 + ... + 200399718.

It is an arithmetic number, because the mean of its divisors is an integer number (1202398224).

Almost surely, 2^6011991105 is an apocalyptic number.

It is an amenable number.

6011991105 is a deficient number, since it is larger than the sum of its proper divisors (3607194687).

6011991105 is a wasteful number, since it uses less digits than its factorization.

6011991105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400799415.

The product of its (nonzero) digits is 2430, while the sum is 33.

The square root of 6011991105 is about 77537.0305402522. The cubic root of 6011991105 is about 1818.3303030821.

Subtracting from 6011991105 its reverse (5011991106), we obtain a palindrome (999999999).

The spelling of 6011991105 in words is "six billion, eleven million, nine hundred ninety-one thousand, one hundred five".