86721135186 has 16 divisors (see below), whose sum is σ = 198219737664. Its totient is φ = 24777467184.

The previous prime is 86721135181. The next prime is 86721135209. The reversal of 86721135186 is 68153112768.

It is not an unprimeable number, because it can be changed into a prime (86721135181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032394425 + ... + 1032394508.

It is an arithmetic number, because the mean of its divisors is an integer number (12388733604).

Almost surely, 2^86721135186 is an apocalyptic number.

86721135186 is an abundant number, since it is smaller than the sum of its proper divisors (111498602478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86721135186 is a wasteful number, since it uses less digits than its factorization.

86721135186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064788945.

The product of its digits is 483840, while the sum is 48.

The spelling of 86721135186 in words is "eighty-six billion, seven hundred twenty-one million, one hundred thirty-five thousand, one hundred eighty-six".