86859642143 has 4 divisors (see below), whose sum is σ = 87030290280. Its totient is φ = 86688994008.

The previous prime is 86859642131. The next prime is 86859642151. The reversal of 86859642143 is 34124695868.

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 86859642143 - 2⁴ = 86859642127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86859642193) 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, 85323305 + ... + 85324322.

It is an arithmetic number, because the mean of its divisors is an integer number (21757572570).

Almost surely, 2^86859642143 is an apocalyptic number.

86859642143 is a deficient number, since it is larger than the sum of its proper divisors (170648137).

86859642143 is a wasteful number, since it uses less digits than its factorization.

86859642143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170648136.

The product of its digits is 9953280, while the sum is 56.

The spelling of 86859642143 in words is "eighty-six billion, eight hundred fifty-nine million, six hundred forty-two thousand, one hundred forty-three".