18180061227008 has 192 divisors, whose sum is σ = 38820228894720. Its totient is φ = 8497152000000.

The previous prime is 18180061226963. The next prime is 18180061227011. The reversal of 18180061227008 is 80072216008181.

It is a self number, because there is not a number n which added to its sum of digits gives 18180061227008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262869233 + ... + 262938383.

It is an arithmetic number, because the mean of its divisors is an integer number (202188692160).

Almost surely, 2^{18180061227008} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18180061227008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19410114447360).

18180061227008 is an abundant number, since it is smaller than the sum of its proper divisors (20640167667712).

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

18180061227008 is a wasteful number, since it uses less digits than its factorization.

18180061227008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69346 (or 69326 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 44.

The spelling of 18180061227008 in words is "eighteen trillion, one hundred eighty billion, sixty-one million, two hundred twenty-seven thousand, eight".