871086162727618 has 4 divisors (see below), whose sum is σ = 1306629244091430. Its totient is φ = 435543081363808.

The previous prime is 871086162727601. The next prime is 871086162727657. The reversal of 871086162727618 is 816727261680178.

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

It can be written as a sum of positive squares in only one way, i.e., 846452282385609 + 24633880342009 = 29093853^2 + 4963253^2 .

It is a super-2 number, since 2×871086162727618² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217771540681903 + ... + 217771540681906.

Almost surely, 2^{871086162727618} is an apocalyptic number.

871086162727618 is a deficient number, since it is larger than the sum of its proper divisors (435543081363812).

871086162727618 is a wasteful number, since it uses less digits than its factorization.

871086162727618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435543081363811.

The product of its (nonzero) digits is 151732224, while the sum is 70.

The spelling of 871086162727618 in words is "eight hundred seventy-one trillion, eighty-six billion, one hundred sixty-two million, seven hundred twenty-seven thousand, six hundred eighteen".