1166181850241 has 2 divisors, whose sum is σ = 1166181850242. Its totient is φ = 1166181850240.

The previous prime is 1166181850187. The next prime is 1166181850331. The reversal of 1166181850241 is 1420581816611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972779799616 + 193402050625 = 986296^2 + 439775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166181850241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166181850192 and 1166181850201.

It is not a weakly prime, because it can be changed into another prime (1166181870241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583090925120 + 583090925121.

It is an arithmetic number, because the mean of its divisors is an integer number (583090925121).

Almost surely, 2^{1166181850241} is an apocalyptic number.

It is an amenable number.

1166181850241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166181850241 is an equidigital number, since it uses as much as digits as its factorization.

1166181850241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 1166181850241 in words is "one trillion, one hundred sixty-six billion, one hundred eighty-one million, eight hundred fifty thousand, two hundred forty-one".