86671066061 has 4 divisors (see below), whose sum is σ = 86752143900. Its totient is φ = 86589988224.

The previous prime is 86671065997. The next prime is 86671066091. The reversal of 86671066061 is 16066017668.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17854037161 + 68817028900 = 133619^2 + 262330^2 .

It is a cyclic number.

It is not a de Polignac number, because 86671066061 - 2⁶ = 86671065997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86671065997 and 86671066015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86671066091) 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, 40537316 + ... + 40539453.

It is an arithmetic number, because the mean of its divisors is an integer number (21688035975).

Almost surely, 2^86671066061 is an apocalyptic number.

It is an amenable number.

86671066061 is a deficient number, since it is larger than the sum of its proper divisors (81077839).

86671066061 is a wasteful number, since it uses less digits than its factorization.

86671066061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81077838.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 86671066061 in words is "eighty-six billion, six hundred seventy-one million, sixty-six thousand, sixty-one".