1111111110671 has 2 divisors, whose sum is σ = 1111111110672. Its totient is φ = 1111111110670.

The previous prime is 1111111110661. The next prime is 1111111110719. The reversal of 1111111110671 is 1760111111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111111110671 - 2¹⁴ = 1111111094287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111111110611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555555335 + 555555555336.

It is an arithmetic number, because the mean of its divisors is an integer number (555555555336).

Almost surely, 2^{1111111110671} is an apocalyptic number.

1111111110671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111110671 is an equidigital number, since it uses as much as digits as its factorization.

1111111110671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 23.

Adding to 1111111110671 its reverse (1760111111111), we get a palindrome (2871222221782).

The spelling of 1111111110671 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, six hundred seventy-one".