86530402165 has 4 divisors (see below), whose sum is σ = 103836482604. Its totient is φ = 69224321728.

The previous prime is 86530402157. The next prime is 86530402201. The reversal of 86530402165 is 56120403568.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22589188209 + 63941213956 = 150297^2 + 252866^2 .

It is a cyclic number.

It is not a de Polignac number, because 86530402165 - 2³ = 86530402157 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8653040212 + ... + 8653040221.

It is an arithmetic number, because the mean of its divisors is an integer number (25959120651).

Almost surely, 2^86530402165 is an apocalyptic number.

It is an amenable number.

86530402165 is a deficient number, since it is larger than the sum of its proper divisors (17306080439).

86530402165 is a wasteful number, since it uses less digits than its factorization.

86530402165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17306080438.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 86530402165 in words is "eighty-six billion, five hundred thirty million, four hundred two thousand, one hundred sixty-five".