86818954873 has 4 divisors (see below), whose sum is σ = 99221662720. Its totient is φ = 74416247028.

The previous prime is 86818954861. The next prime is 86818954879. The reversal of 86818954873 is 37845981868.

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 a de Polignac number, because none of the positive numbers 2^k-86818954873 is a prime.

It is a super-2 number, since 2×86818954873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86818954799 and 86818954808.

It is not an unprimeable number, because it can be changed into a prime (86818954879) 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, 6201353913 + ... + 6201353926.

It is an arithmetic number, because the mean of its divisors is an integer number (24805415680).

Almost surely, 2^86818954873 is an apocalyptic number.

It is an amenable number.

86818954873 is a deficient number, since it is larger than the sum of its proper divisors (12402707847).

86818954873 is a wasteful number, since it uses less digits than its factorization.

86818954873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12402707846.

The product of its digits is 92897280, while the sum is 67.

The spelling of 86818954873 in words is "eighty-six billion, eight hundred eighteen million, nine hundred fifty-four thousand, eight hundred seventy-three".