1166666722339 has 2 divisors, whose sum is σ = 1166666722340. Its totient is φ = 1166666722338.

The previous prime is 1166666722327. The next prime is 1166666722343. The reversal of 1166666722339 is 9332276666611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166666722339 - 2¹¹ = 1166666720291 is a prime.

It is a super-2 number, since 2×1166666722339² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166666722399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583333361169 + 583333361170.

It is an arithmetic number, because the mean of its divisors is an integer number (583333361170).

Almost surely, 2^{1166666722339} is an apocalyptic number.

1166666722339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166666722339 is an equidigital number, since it uses as much as digits as its factorization.

1166666722339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 58.

The spelling of 1166666722339 in words is "one trillion, one hundred sixty-six billion, six hundred sixty-six million, seven hundred twenty-two thousand, three hundred thirty-nine".