86224721638586 has 4 divisors (see below), whose sum is σ = 129337082457882. Its totient is φ = 43112360819292.

The previous prime is 86224721638579. The next prime is 86224721638589. The reversal of 86224721638586 is 68583612742268.

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

It can be written as a sum of positive squares in only one way, i.e., 83607706875625 + 2617014762961 = 9143725^2 + 1617719^2 .

It is not an unprimeable number, because it can be changed into a prime (86224721638589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556180409645 + ... + 21556180409648.

Almost surely, 2^{86224721638586} is an apocalyptic number.

86224721638586 is a deficient number, since it is larger than the sum of its proper divisors (43112360819296).

86224721638586 is a wasteful number, since it uses less digits than its factorization.

86224721638586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43112360819295.

The product of its digits is 371589120, while the sum is 68.

The spelling of 86224721638586 in words is "eighty-six trillion, two hundred twenty-four billion, seven hundred twenty-one million, six hundred thirty-eight thousand, five hundred eighty-six".