86181730417493 has 4 divisors (see below), whose sum is σ = 86189970386880. Its totient is φ = 86173490448108.

The previous prime is 86181730417357. The next prime is 86181730417513. The reversal of 86181730417493 is 39471403718168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86181730417493 - 2¹⁸ = 86181730155349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86181730317493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4119969005 + ... + 4119989922.

It is an arithmetic number, because the mean of its divisors is an integer number (21547492596720).

Almost surely, 2^{86181730417493} is an apocalyptic number.

It is an amenable number.

86181730417493 is a deficient number, since it is larger than the sum of its proper divisors (8239969387).

86181730417493 is a wasteful number, since it uses less digits than its factorization.

86181730417493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239969386.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 86181730417493 in words is "eighty-six trillion, one hundred eighty-one billion, seven hundred thirty million, four hundred seventeen thousand, four hundred ninety-three".