12642424155 has 96 divisors (see below), whose sum is σ = 23571824640. Its totient is φ = 6249104640.

The previous prime is 12642424147. The next prime is 12642424159. The reversal of 12642424155 is 55142424621.

12642424155 is a `hidden beast` number, since 1 + 2 + 642 + 4 + 2 + 4 + 1 + 5 + 5 = 666.

12642424155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12642424155 - 2³ = 12642424147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12642424159) 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 95 ways as a sum of consecutive naturals, for example, 11630022 + ... + 11631108.

It is an arithmetic number, because the mean of its divisors is an integer number (245539840).

Almost surely, 2^12642424155 is an apocalyptic number.

12642424155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12642424155 is a deficient number, since it is larger than the sum of its proper divisors (10929400485).

12642424155 is a wasteful number, since it uses less digits than its factorization.

12642424155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

Adding to 12642424155 its reverse (55142424621), we get a palindrome (67784848776).

The spelling of 12642424155 in words is "twelve billion, six hundred forty-two million, four hundred twenty-four thousand, one hundred fifty-five".