12158014420 has 24 divisors (see below), whose sum is σ = 25679420424. Its totient is φ = 4835093376.

The previous prime is 12158014409. The next prime is 12158014459. The reversal of 12158014420 is 2441085121.

12158014420 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 4 ways, for example, as 3188409156 + 8969605264 = 56466^2 + 94708^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1753479 + ... + 1760398.

It is an arithmetic number, because the mean of its divisors is an integer number (1069975851).

Almost surely, 2^12158014420 is an apocalyptic number.

12158014420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12158014420 is an abundant number, since it is smaller than the sum of its proper divisors (13521406004).

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

12158014420 is a wasteful number, since it uses less digits than its factorization.

12158014420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514059 (or 3514057 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

Adding to 12158014420 its reverse (2441085121), we get a palindrome (14599099541).

It can be divided in two parts, 1215801 and 4420, that added together give a palindrome (1220221).

The spelling of 12158014420 in words is "twelve billion, one hundred fifty-eight million, fourteen thousand, four hundred twenty".