18142365729663 has 20 divisors (see below), whose sum is σ = 30973209923920. Its totient is φ = 10367066130912.

The previous prime is 18142365729647. The next prime is 18142365729739. The reversal of 18142365729663 is 36692756324181.

18142365729663 is a `hidden beast` number, since 1 + 8 + 1 + 4 + 236 + 57 + 296 + 63 = 666.

It is not a de Polignac number, because 18142365729663 - 2⁴ = 18142365729647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18142365729663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142365729643) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 15998558278 + ... + 15998559411.

It is an arithmetic number, because the mean of its divisors is an integer number (1548660496196).

Almost surely, 2^{18142365729663} is an apocalyptic number.

18142365729663 is a deficient number, since it is larger than the sum of its proper divisors (12830844194257).

18142365729663 is an equidigital number, since it uses as much as digits as its factorization.

18142365729663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31997117708 (or 31997117699 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 18142365729663 in words is "eighteen trillion, one hundred forty-two billion, three hundred sixty-five million, seven hundred twenty-nine thousand, six hundred sixty-three".