1165261747171 has 8 divisors (see below), whose sum is σ = 1175151236688. Its totient is φ = 1155387324000.

The previous prime is 1165261747159. The next prime is 1165261747219. The reversal of 1165261747171 is 1717471625611.

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-1165261747171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165261787171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3611220 + ... + 3920641.

It is an arithmetic number, because the mean of its divisors is an integer number (146893904586).

Almost surely, 2^{1165261747171} is an apocalyptic number.

1165261747171 is a deficient number, since it is larger than the sum of its proper divisors (9889489517).

1165261747171 is a wasteful number, since it uses less digits than its factorization.

1165261747171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533173.

The product of its digits is 493920, while the sum is 49.

The spelling of 1165261747171 in words is "one trillion, one hundred sixty-five billion, two hundred sixty-one million, seven hundred forty-seven thousand, one hundred seventy-one".