86509673518 has 4 divisors (see below), whose sum is σ = 129764510280. Its totient is φ = 43254836758.

The previous prime is 86509673501. The next prime is 86509673557. The reversal of 86509673518 is 81537690568.

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

It is a super-3 number, since 3×86509673518³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21627418378 + ... + 21627418381.

It is an arithmetic number, because the mean of its divisors is an integer number (32441127570).

Almost surely, 2^86509673518 is an apocalyptic number.

86509673518 is a deficient number, since it is larger than the sum of its proper divisors (43254836762).

86509673518 is a wasteful number, since it uses less digits than its factorization.

86509673518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43254836761.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 86509673518 in words is "eighty-six billion, five hundred nine million, six hundred seventy-three thousand, five hundred eighteen".