12162188858 has 8 divisors (see below), whose sum is σ = 19316417652. Its totient is φ = 5723382976.

The previous prime is 12162188851. The next prime is 12162188879. The reversal of 12162188858 is 85888126121.

12162188858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10796664649 + 1365524209 = 103907^2 + 36953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12162188851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178855685 + ... + 178855752.

Almost surely, 2^12162188858 is an apocalyptic number.

12162188858 is a deficient number, since it is larger than the sum of its proper divisors (7154228794).

12162188858 is a wasteful number, since it uses less digits than its factorization.

12162188858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357711456.

The product of its digits is 491520, while the sum is 50.

The spelling of 12162188858 in words is "twelve billion, one hundred sixty-two million, one hundred eighty-eight thousand, eight hundred fifty-eight".