18463566843136 has 36 divisors (see below), whose sum is σ = 36988061099332. Its totient is φ = 9198455648256.

The previous prime is 18463566843109. The next prime is 18463566843149. The reversal of 18463566843136 is 63134866536481.

It can be written as a sum of positive squares in 2 ways, for example, as 2172204345600 + 16291362497536 = 1473840^2 + 4036256^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130115565 + ... + 130257388.

Almost surely, 2^{18463566843136} is an apocalyptic number.

18463566843136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18463566843136 is an abundant number, since it is smaller than the sum of its proper divisors (18524494256196).

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

18463566843136 is an equidigital number, since it uses as much as digits as its factorization.

18463566843136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260373246 (or 260373232 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 64.

The spelling of 18463566843136 in words is "eighteen trillion, four hundred sixty-three billion, five hundred sixty-six million, eight hundred forty-three thousand, one hundred thirty-six".