86605630138865 has 8 divisors (see below), whose sum is σ = 104588710028520. Its totient is φ = 68843201536512.

The previous prime is 86605630138843. The next prime is 86605630138903. The reversal of 86605630138865 is 56883103650668.

It can be written as a sum of positive squares in 4 ways, for example, as 267265218529 + 86338364920336 = 516977^2 + 9291844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86605630138865 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55162820960 + ... + 55162822529.

It is an arithmetic number, because the mean of its divisors is an integer number (13073588753565).

Almost surely, 2^{86605630138865} is an apocalyptic number.

It is an amenable number.

86605630138865 is a deficient number, since it is larger than the sum of its proper divisors (17983079889655).

86605630138865 is a wasteful number, since it uses less digits than its factorization.

86605630138865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110325643651.

The product of its (nonzero) digits is 149299200, while the sum is 65.

The spelling of 86605630138865 in words is "eighty-six trillion, six hundred five billion, six hundred thirty million, one hundred thirty-eight thousand, eight hundred sixty-five".