1191165047705 has 8 divisors (see below), whose sum is σ = 1429406393472. Its totient is φ = 952926480688.

The previous prime is 1191165047659. The next prime is 1191165047717. The reversal of 1191165047705 is 5077405611911.

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

It is a cyclic number.

It is not a de Polignac number, because 1191165047705 - 2⁶ = 1191165047641 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 1191165047705.

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, 407312 + ... + 1596318.

It is an arithmetic number, because the mean of its divisors is an integer number (178675799184).

Almost surely, 2^{1191165047705} is an apocalyptic number.

It is an amenable number.

1191165047705 is a deficient number, since it is larger than the sum of its proper divisors (238241345767).

1191165047705 is a wasteful number, since it uses less digits than its factorization.

1191165047705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389375.

The product of its (nonzero) digits is 264600, while the sum is 47.

The spelling of 1191165047705 in words is "one trillion, one hundred ninety-one billion, one hundred sixty-five million, forty-seven thousand, seven hundred five".