86218172611 has 4 divisors (see below), whose sum is σ = 87055242352. Its totient is φ = 85381102872.

The previous prime is 86218172609. The next prime is 86218172617. The reversal of 86218172611 is 11627181268.

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 86218172611 - 2¹ = 86218172609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86218172617) 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, 418534716 + ... + 418534921.

It is an arithmetic number, because the mean of its divisors is an integer number (21763810588).

Almost surely, 2^86218172611 is an apocalyptic number.

86218172611 is a deficient number, since it is larger than the sum of its proper divisors (837069741).

86218172611 is a wasteful number, since it uses less digits than its factorization.

86218172611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837069740.

The product of its digits is 64512, while the sum is 43.

The spelling of 86218172611 in words is "eighty-six billion, two hundred eighteen million, one hundred seventy-two thousand, six hundred eleven".