86171437059 has 16 divisors (see below), whose sum is σ = 115013025792. Its totient is φ = 57388775168.

The previous prime is 86171437039. The next prime is 86171437081. The reversal of 86171437059 is 95073417168.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 86171437059 - 2⁸ = 86171436803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86171437019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18320302 + ... + 18325004.

It is an arithmetic number, because the mean of its divisors is an integer number (7188314112).

Almost surely, 2^86171437059 is an apocalyptic number.

86171437059 is a deficient number, since it is larger than the sum of its proper divisors (28841588733).

86171437059 is a wasteful number, since it uses less digits than its factorization.

86171437059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 86171437059 in words is "eighty-six billion, one hundred seventy-one million, four hundred thirty-seven thousand, fifty-nine".