6011206991 has 4 divisors (see below), whose sum is σ = 6013238712. Its totient is φ = 6009175272.

The previous prime is 6011206963. The next prime is 6011207009. The reversal of 6011206991 is 1996021106.

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-6011206991 is a prime.

It is a super-2 number, since 2×6011206991² = 72269218977294548162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6011236991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011416 + ... + 1017341.

It is an arithmetic number, because the mean of its divisors is an integer number (1503309678).

Almost surely, 2^6011206991 is an apocalyptic number.

6011206991 is a deficient number, since it is larger than the sum of its proper divisors (2031721).

6011206991 is a wasteful number, since it uses less digits than its factorization.

6011206991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031720.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 6011206991 is about 77531.9739913798. The cubic root of 6011206991 is about 1818.2512477291.

The spelling of 6011206991 in words is "six billion, eleven million, two hundred six thousand, nine hundred ninety-one".