86543135318291 has 4 divisors (see below), whose sum is σ = 87094365479712. Its totient is φ = 85991905156872.

The previous prime is 86543135318281. The next prime is 86543135318401. The reversal of 86543135318291 is 19281353134568.

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

It is a cyclic number.

It is not a de Polignac number, because 86543135318291 - 2²² = 86543131123987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86543135318291.

It is not an unprimeable number, because it can be changed into a prime (86543135318281) 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, 275615080475 + ... + 275615080788.

It is an arithmetic number, because the mean of its divisors is an integer number (21773591369928).

Almost surely, 2^{86543135318291} is an apocalyptic number.

86543135318291 is a deficient number, since it is larger than the sum of its proper divisors (551230161421).

86543135318291 is a wasteful number, since it uses less digits than its factorization.

86543135318291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551230161420.

The product of its digits is 18662400, while the sum is 59.

The spelling of 86543135318291 in words is "eighty-six trillion, five hundred forty-three billion, one hundred thirty-five million, three hundred eighteen thousand, two hundred ninety-one".