11331166157 has 4 divisors (see below), whose sum is σ = 11474598720. Its totient is φ = 11187733596.

The previous prime is 11331166151. The next prime is 11331166169. The reversal of 11331166157 is 75166113311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331166157 - 2¹⁰ = 11331165133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331166151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71716163 + ... + 71716320.

It is an arithmetic number, because the mean of its divisors is an integer number (2868649680).

Almost surely, 2^11331166157 is an apocalyptic number.

It is an amenable number.

11331166157 is a deficient number, since it is larger than the sum of its proper divisors (143432563).

11331166157 is an equidigital number, since it uses as much as digits as its factorization.

11331166157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143432562.

The product of its digits is 11340, while the sum is 35.

Adding to 11331166157 its reverse (75166113311), we get a palindrome (86497279468).

The spelling of 11331166157 in words is "eleven billion, three hundred thirty-one million, one hundred sixty-six thousand, one hundred fifty-seven".