12872361618 has 16 divisors (see below), whose sum is σ = 28605248160. Its totient is φ = 4290787188.

The previous prime is 12872361617. The next prime is 12872361637. The reversal of 12872361618 is 81616327821.

12872361618 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 23 + 6 + 1 + 618 = 666.

12872361618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12872361617) 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 7 ways as a sum of consecutive naturals, for example, 119188480 + ... + 119188587.

It is an arithmetic number, because the mean of its divisors is an integer number (1787828010).

Almost surely, 2^12872361618 is an apocalyptic number.

12872361618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12872361618 is an abundant number, since it is smaller than the sum of its proper divisors (15732886542).

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

12872361618 is a wasteful number, since it uses less digits than its factorization.

12872361618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238377078 (or 238377072 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 12872361618 in words is "twelve billion, eight hundred seventy-two million, three hundred sixty-one thousand, six hundred eighteen".