11554531171 has 2 divisors, whose sum is σ = 11554531172. Its totient is φ = 11554531170.

The previous prime is 11554531139. The next prime is 11554531187. The reversal of 11554531171 is 17113545511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11554531171 - 2⁵ = 11554531139 is a prime.

It is a super-2 number, since 2×11554531171² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11554531871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777265585 + 5777265586.

It is an arithmetic number, because the mean of its divisors is an integer number (5777265586).

Almost surely, 2^11554531171 is an apocalyptic number.

11554531171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554531171 is an equidigital number, since it uses as much as digits as its factorization.

11554531171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 34.

The spelling of 11554531171 in words is "eleven billion, five hundred fifty-four million, five hundred thirty-one thousand, one hundred seventy-one".