86180207521 has 8 divisors (see below), whose sum is σ = 88422098688. Its totient is φ = 83944980000.

The previous prime is 86180207513. The next prime is 86180207551. The reversal of 86180207521 is 12570208168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86180207521 - 2³ = 86180207513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86180207551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1639705 + ... + 1691446.

It is an arithmetic number, because the mean of its divisors is an integer number (11052762336).

Almost surely, 2^86180207521 is an apocalyptic number.

It is an amenable number.

86180207521 is a deficient number, since it is larger than the sum of its proper divisors (2241891167).

86180207521 is a wasteful number, since it uses less digits than its factorization.

86180207521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331823.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 86180207521 in words is "eighty-six billion, one hundred eighty million, two hundred seven thousand, five hundred twenty-one".