1163531709171 has 96 divisors (see below), whose sum is σ = 1996017121280. Its totient is φ = 646652160000.

The previous prime is 1163531709139. The next prime is 1163531709173. The reversal of 1163531709171 is 1719071353611.

It is a happy number.

1163531709171 is a `hidden beast` number, since 1 + 1 + 635 + 3 + 1 + 7 + 0 + 9 + 1 + 7 + 1 = 666.

It is not a de Polignac number, because 1163531709171 - 2⁵ = 1163531709139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163531709173) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4491171 + ... + 4743171.

Almost surely, 2^{1163531709171} is an apocalyptic number.

1163531709171 is a deficient number, since it is larger than the sum of its proper divisors (832485412109).

1163531709171 is a wasteful number, since it uses less digits than its factorization.

1163531709171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252137 (or 252134 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The spelling of 1163531709171 in words is "one trillion, one hundred sixty-three billion, five hundred thirty-one million, seven hundred nine thousand, one hundred seventy-one".