12662155044 has 144 divisors (see below), whose sum is σ = 41281269120. Its totient is φ = 3175441920.

The previous prime is 12662155043. The next prime is 12662155061. The reversal of 12662155044 is 44055126621.

12662155044 is a `hidden beast` number, since 1 + 2 + 6 + 62 + 1 + 550 + 44 = 666.

12662155044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12662155043) 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 47 ways as a sum of consecutive naturals, for example, 1632 + ... + 159144.

It is an arithmetic number, because the mean of its divisors is an integer number (286675480).

Almost surely, 2^12662155044 is an apocalyptic number.

12662155044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12662155044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20640634560).

12662155044 is an abundant number, since it is smaller than the sum of its proper divisors (28619114076).

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

12662155044 is a wasteful number, since it uses less digits than its factorization.

12662155044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157570 (or 157565 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 12662155044 in words is "twelve billion, six hundred sixty-two million, one hundred fifty-five thousand, forty-four".