86159813506 has 16 divisors (see below), whose sum is σ = 142575903288. Its totient is φ = 38796163200.

The previous prime is 86159813501. The next prime is 86159813563. The reversal of 86159813506 is 60531895168.

It can be written as a sum of positive squares in 4 ways, for example, as 42545250225 + 43614563281 = 206265^2 + 208841^2 .

It is not an unprimeable number, because it can be changed into a prime (86159813501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40411605 + ... + 40413736.

Almost surely, 2^86159813506 is an apocalyptic number.

86159813506 is a deficient number, since it is larger than the sum of its proper divisors (56416089782).

86159813506 is a wasteful number, since it uses less digits than its factorization.

86159813506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80825397.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 86159813506 in words is "eighty-six billion, one hundred fifty-nine million, eight hundred thirteen thousand, five hundred six".