11530611166 has 4 divisors (see below), whose sum is σ = 17295916752. Its totient is φ = 5765305582.

The previous prime is 11530611161. The next prime is 11530611173. The reversal of 11530611166 is 66111603511.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×11530611166² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530611161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2882652790 + ... + 2882652793.

It is an arithmetic number, because the mean of its divisors is an integer number (4323979188).

Almost surely, 2^11530611166 is an apocalyptic number.

11530611166 is a deficient number, since it is larger than the sum of its proper divisors (5765305586).

11530611166 is an equidigital number, since it uses as much as digits as its factorization.

11530611166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765305585.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 11530611166 in words is "eleven billion, five hundred thirty million, six hundred eleven thousand, one hundred sixty-six".