18238802455296 has 144 divisors (see below), whose sum is σ = 53957935271520. Its totient is φ = 6077054730240.

The previous prime is 18238802455199. The next prime is 18238802455297. The reversal of 18238802455296 is 69255420883281.

It is a happy number.

18238802455296 is a `hidden beast` number, since 1 + 8 + 2 + 3 + 8 + 80 + 24 + 5 + 529 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×18238802455296² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18238802455297) 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 15 ways as a sum of consecutive naturals, for example, 15989076 + ... + 17091756.

It is an arithmetic number, because the mean of its divisors is an integer number (374707883830).

Almost surely, 2^{18238802455296} is an apocalyptic number.

18238802455296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18238802455296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26978967635760).

18238802455296 is an abundant number, since it is smaller than the sum of its proper divisors (35719132816224).

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

18238802455296 is a wasteful number, since it uses less digits than its factorization.

18238802455296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105099 (or 1105079 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 18238802455296 in words is "eighteen trillion, two hundred thirty-eight billion, eight hundred two million, four hundred fifty-five thousand, two hundred ninety-six".