1156217151169 has 2 divisors, whose sum is σ = 1156217151170. Its totient is φ = 1156217151168.

The previous prime is 1156217151163. The next prime is 1156217151179. The reversal of 1156217151169 is 9611517126511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1146854653569 + 9362497600 = 1070913^2 + 96760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156217151169 - 2¹⁹ = 1156216626881 is a prime.

It is a super-2 number, since 2×1156217151169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1156217151163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578108575584 + 578108575585.

It is an arithmetic number, because the mean of its divisors is an integer number (578108575585).

Almost surely, 2^{1156217151169} is an apocalyptic number.

It is an amenable number.

1156217151169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156217151169 is an equidigital number, since it uses as much as digits as its factorization.

1156217151169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 46.

The spelling of 1156217151169 in words is "one trillion, one hundred fifty-six billion, two hundred seventeen million, one hundred fifty-one thousand, one hundred sixty-nine".