1011853571171 has 2 divisors, whose sum is σ = 1011853571172. Its totient is φ = 1011853571170.

The previous prime is 1011853571153. The next prime is 1011853571237. The reversal of 1011853571171 is 1711753581101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011853571171 - 2⁶ = 1011853571107 is a prime.

It is a super-2 number, since 2×1011853571171² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1011853571671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505926785585 + 505926785586.

It is an arithmetic number, because the mean of its divisors is an integer number (505926785586).

Almost surely, 2^{1011853571171} is an apocalyptic number.

1011853571171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011853571171 is an equidigital number, since it uses as much as digits as its factorization.

1011853571171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 41.

The spelling of 1011853571171 in words is "one trillion, eleven billion, eight hundred fifty-three million, five hundred seventy-one thousand, one hundred seventy-one".