12168141885 has 12 divisors (see below), whose sum is σ = 21091446012. Its totient is φ = 6489675648.

The previous prime is 12168141841. The next prime is 12168141889. The reversal of 12168141885 is 58814186121.

It can be written as a sum of positive squares in 2 ways, for example, as 5215583961 + 6952557924 = 72219^2 + 83382^2 .

It is not a de Polignac number, because 12168141885 - 2¹⁰ = 12168140861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 270403153 = 12168141885 / (1 + 2 + 1 + 6 + 8 + 1 + 4 + 1 + 8 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12168141885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168141889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135201532 + ... + 135201621.

It is an arithmetic number, because the mean of its divisors is an integer number (1757620501).

Almost surely, 2^12168141885 is an apocalyptic number.

12168141885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12168141885 is a deficient number, since it is larger than the sum of its proper divisors (8923304127).

12168141885 is a wasteful number, since it uses less digits than its factorization.

12168141885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270403164 (or 270403161 counting only the distinct ones).

The product of its digits is 122880, while the sum is 45.

The spelling of 12168141885 in words is "twelve billion, one hundred sixty-eight million, one hundred forty-one thousand, eight hundred eighty-five".