11745897169 has 2 divisors, whose sum is σ = 11745897170. Its totient is φ = 11745897168.

The previous prime is 11745897161. The next prime is 11745897199. The reversal of 11745897169 is 96179854711.

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., 7989678225 + 3756218944 = 89385^2 + 61288^2 .

It is a cyclic number.

It is not a de Polignac number, because 11745897169 - 2³ = 11745897161 is a prime.

It is a super-2 number, since 2×11745897169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11745897161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5872948584 + 5872948585.

It is an arithmetic number, because the mean of its divisors is an integer number (5872948585).

Almost surely, 2^11745897169 is an apocalyptic number.

It is an amenable number.

11745897169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11745897169 is an equidigital number, since it uses as much as digits as its factorization.

11745897169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 58.

The spelling of 11745897169 in words is "eleven billion, seven hundred forty-five million, eight hundred ninety-seven thousand, one hundred sixty-nine".