12158157066 has 16 divisors (see below), whose sum is σ = 26526888288. Its totient is φ = 3684290000.

The previous prime is 12158157061. The next prime is 12158157083. The reversal of 12158157066 is 66075185121.

It is not an unprimeable number, because it can be changed into a prime (12158157061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92107185 + ... + 92107316.

It is an arithmetic number, because the mean of its divisors is an integer number (1657930518).

Almost surely, 2^12158157066 is an apocalyptic number.

12158157066 is an abundant number, since it is smaller than the sum of its proper divisors (14368731222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12158157066 is a wasteful number, since it uses less digits than its factorization.

12158157066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184214517.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 12158157066 in words is "twelve billion, one hundred fifty-eight million, one hundred fifty-seven thousand, sixty-six".