18144855460242 has 36 divisors (see below), whose sum is σ = 45732441825486. Its totient is φ = 5184244416960.

The previous prime is 18144855460241. The next prime is 18144855460267. The reversal of 18144855460242 is 24206455844181.

18144855460242 is a `hidden beast` number, since 1 + 8 + 1 + 4 + 4 + 8 + 554 + 60 + 24 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17557365402801 + 587490057441 = 4190151^2 + 766479^2 .

It is not an unprimeable number, because it can be changed into a prime (18144855460241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10286198359 + ... + 10286200122.

Almost surely, 2^{18144855460242} is an apocalyptic number.

18144855460242 is an abundant number, since it is smaller than the sum of its proper divisors (27587586365244).

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

18144855460242 is a wasteful number, since it uses less digits than its factorization.

18144855460242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572398503 (or 20572398493 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 54.

It can be divided in two parts, 1814485 and 5460242, that added together give a palindrome (7274727).

The spelling of 18144855460242 in words is "eighteen trillion, one hundred forty-four billion, eight hundred fifty-five million, four hundred sixty thousand, two hundred forty-two".