86871539623 has 4 divisors (see below), whose sum is σ = 94768952328. Its totient is φ = 78974126920.

The previous prime is 86871539611. The next prime is 86871539633. The reversal of 86871539623 is 32693517868.

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 86871539623 - 2²⁵ = 86837985191 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86871539633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3948706336 + ... + 3948706357.

It is an arithmetic number, because the mean of its divisors is an integer number (23692238082).

Almost surely, 2^86871539623 is an apocalyptic number.

86871539623 is a deficient number, since it is larger than the sum of its proper divisors (7897412705).

86871539623 is a wasteful number, since it uses less digits than its factorization.

86871539623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897412704.

The product of its digits is 13063680, while the sum is 58.

The spelling of 86871539623 in words is "eighty-six billion, eight hundred seventy-one million, five hundred thirty-nine thousand, six hundred twenty-three".