86180590081 has 4 divisors (see below), whose sum is σ = 86243912964. Its totient is φ = 86117267200.

The previous prime is 86180590079. The next prime is 86180590087. The reversal of 86180590081 is 18009508168.

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 4907703025 + 81272887056 = 70055^2 + 285084^2 .

It is a cyclic number.

It is not a de Polignac number, because 86180590081 - 2¹ = 86180590079 is a prime.

It is a super-2 number, since 2×86180590081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86180590087) 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, 31659400 + ... + 31662121.

It is an arithmetic number, because the mean of its divisors is an integer number (21560978241).

Almost surely, 2^86180590081 is an apocalyptic number.

It is an amenable number.

86180590081 is a deficient number, since it is larger than the sum of its proper divisors (63322883).

86180590081 is a wasteful number, since it uses less digits than its factorization.

86180590081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63322882.

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 86180590081 in words is "eighty-six billion, one hundred eighty million, five hundred ninety thousand, eighty-one".