12143894286618 has 48 divisors (see below), whose sum is σ = 27467874173376. Its totient is φ = 3870258025920.

The previous prime is 12143894286617. The next prime is 12143894286619. The reversal of 12143894286618 is 81668249834121.

It is a happy number.

12143894286618 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 3 + 8 + 9 + 4 + 2 + 8 + 6 + 618 = 666.

It is an interprime number because it is at equal distance from previous prime (12143894286617) and next prime (12143894286619).

It is not an unprimeable number, because it can be changed into a prime (12143894286617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5531043 + ... + 7408118.

It is an arithmetic number, because the mean of its divisors is an integer number (572247378612).

Almost surely, 2^{12143894286618} is an apocalyptic number.

12143894286618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12143894286618 is an abundant number, since it is smaller than the sum of its proper divisors (15323979886758).

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

12143894286618 is a wasteful number, since it uses less digits than its factorization.

12143894286618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12941459 (or 12941456 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 12143894286618 in words is "twelve trillion, one hundred forty-three billion, eight hundred ninety-four million, two hundred eighty-six thousand, six hundred eighteen".