8106067991 has 12 divisors (see below), whose sum is σ = 9445076928. Its totient is φ = 6936586272.

The previous prime is 8106067909. The next prime is 8106068029. The reversal of 8106067991 is 1997606018.

It is a de Polignac number, because none of the positive numbers 2^k-8106067991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8106067691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106526 + ... + 166011.

It is an arithmetic number, because the mean of its divisors is an integer number (787089744).

Almost surely, 2^8106067991 is an apocalyptic number.

8106067991 is a deficient number, since it is larger than the sum of its proper divisors (1339008937).

8106067991 is a wasteful number, since it uses less digits than its factorization.

8106067991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273158 (or 273151 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 8106067991 is about 90033.7047499435. The cubic root of 8106067991 is about 2008.8002205158.

The spelling of 8106067991 in words is "eight billion, one hundred six million, sixty-seven thousand, nine hundred ninety-one".