8102009071 has 4 divisors (see below), whose sum is σ = 8725240552. Its totient is φ = 7478777592.

The previous prime is 8102009023. The next prime is 8102009087. The reversal of 8102009071 is 1709002018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1709002018 = 2 ⋅854501009.

It is not a de Polignac number, because 8102009071 - 2²⁷ = 7967791343 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 (8102009471) 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, 311615721 + ... + 311615746.

It is an arithmetic number, because the mean of its divisors is an integer number (2181310138).

Almost surely, 2^8102009071 is an apocalyptic number.

8102009071 is a deficient number, since it is larger than the sum of its proper divisors (623231481).

8102009071 is a wasteful number, since it uses less digits than its factorization.

8102009071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623231480.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 8102009071 is about 90011.1608135347. The cubic root of 8102009071 is about 2008.4648782891.

The spelling of 8102009071 in words is "eight billion, one hundred two million, nine thousand, seventy-one".