1170791686885 has 4 divisors (see below), whose sum is σ = 1404950024268. Its totient is φ = 936633349504.

The previous prime is 1170791686873. The next prime is 1170791686903. The reversal of 1170791686885 is 5886861970711.

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 350011857924 + 820779828961 = 591618^2 + 905969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170791686885 - 2³³ = 1162201752293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170791686885.

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, 117079168684 + ... + 117079168693.

It is an arithmetic number, because the mean of its divisors is an integer number (351237506067).

Almost surely, 2^{1170791686885} is an apocalyptic number.

It is an amenable number.

1170791686885 is a deficient number, since it is larger than the sum of its proper divisors (234158337383).

1170791686885 is an equidigital number, since it uses as much as digits as its factorization.

1170791686885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234158337382.

The product of its (nonzero) digits is 40642560, while the sum is 67.

The spelling of 1170791686885 in words is "one trillion, one hundred seventy billion, seven hundred ninety-one million, six hundred eighty-six thousand, eight hundred eighty-five".