86645809747 has 32 divisors (see below), whose sum is σ = 105929856000. Its totient is φ = 69303282048.

The previous prime is 86645809709. The next prime is 86645809769. The reversal of 86645809747 is 74790854668.

It is not a de Polignac number, because 86645809747 - 2²³ = 86637421139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86645809147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660754 + ... + 780952.

It is an arithmetic number, because the mean of its divisors is an integer number (3310308000).

Almost surely, 2^86645809747 is an apocalyptic number.

86645809747 is a deficient number, since it is larger than the sum of its proper divisors (19284046253).

86645809747 is a wasteful number, since it uses less digits than its factorization.

86645809747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120355.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 86645809747 in words is "eighty-six billion, six hundred forty-five million, eight hundred nine thousand, seven hundred forty-seven".