1166650065377 has 2 divisors, whose sum is σ = 1166650065378. Its totient is φ = 1166650065376.

The previous prime is 1166650065311. The next prime is 1166650065403. The reversal of 1166650065377 is 7735600566611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671947436176 + 494702629201 = 819724^2 + 703351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166650065377 - 2⁸ = 1166650065121 is a prime.

It is a super-2 number, since 2×1166650065377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166650065277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583325032688 + 583325032689.

It is an arithmetic number, because the mean of its divisors is an integer number (583325032689).

Almost surely, 2^{1166650065377} is an apocalyptic number.

It is an amenable number.

1166650065377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166650065377 is an equidigital number, since it uses as much as digits as its factorization.

1166650065377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 1166650065377 in words is "one trillion, one hundred sixty-six billion, six hundred fifty million, sixty-five thousand, three hundred seventy-seven".