1161071123117 has 16 divisors (see below), whose sum is σ = 1217308176000. Its totient is φ = 1105320480000.

The previous prime is 1161071123089. The next prime is 1161071123123. The reversal of 1161071123117 is 7113211701611.

It is a cyclic number.

It is not a de Polignac number, because 1161071123117 - 2⁶ = 1161071123053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161071123917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7550009 + ... + 7702257.

It is an arithmetic number, because the mean of its divisors is an integer number (76081761000).

Almost surely, 2^{1161071123117} is an apocalyptic number.

It is an amenable number.

1161071123117 is a deficient number, since it is larger than the sum of its proper divisors (56237052883).

1161071123117 is a wasteful number, since it uses less digits than its factorization.

1161071123117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153844.

The product of its (nonzero) digits is 1764, while the sum is 32.

Adding to 1161071123117 its reverse (7113211701611), we get a palindrome (8274282824728).

The spelling of 1161071123117 in words is "one trillion, one hundred sixty-one billion, seventy-one million, one hundred twenty-three thousand, one hundred seventeen".