86709216291 has 4 divisors (see below), whose sum is σ = 115612288392. Its totient is φ = 57806144192.

The previous prime is 86709216281. The next prime is 86709216317. The reversal of 86709216291 is 19261290768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86709216291 - 2⁹ = 86709215779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86709216211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14451536046 + ... + 14451536051.

It is an arithmetic number, because the mean of its divisors is an integer number (28903072098).

Almost surely, 2^86709216291 is an apocalyptic number.

86709216291 is a deficient number, since it is larger than the sum of its proper divisors (28903072101).

86709216291 is a wasteful number, since it uses less digits than its factorization.

86709216291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28903072100.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 86709216291 in words is "eighty-six billion, seven hundred nine million, two hundred sixteen thousand, two hundred ninety-one".