1181717287163 has 32 divisors (see below), whose sum is σ = 1382088314880. Its totient is φ = 989523954720.

The previous prime is 1181717287151. The next prime is 1181717287187. The reversal of 1181717287163 is 3617827171811.

It is a happy number.

It is not a de Polignac number, because 1181717287163 - 2²⁰ = 1181716238587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1181717283163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36114056 + ... + 36146762.

It is an arithmetic number, because the mean of its divisors is an integer number (43190259840).

Almost surely, 2^{1181717287163} is an apocalyptic number.

1181717287163 is a deficient number, since it is larger than the sum of its proper divisors (200371027717).

1181717287163 is a wasteful number, since it uses less digits than its factorization.

1181717287163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33447.

The product of its digits is 790272, while the sum is 53.

The spelling of 1181717287163 in words is "one trillion, one hundred eighty-one billion, seven hundred seventeen million, two hundred eighty-seven thousand, one hundred sixty-three".