18047882209536 has 432 divisors, whose sum is σ = 55682327500800. Its totient is φ = 5605509132288.

The previous prime is 18047882209501. The next prime is 18047882209537. The reversal of 18047882209536 is 63590228874081.

18047882209536 is a `hidden beast` number, since 1 + 8 + 0 + 4 + 78 + 8 + 2 + 20 + 9 + 536 = 666.

It is not an unprimeable number, because it can be changed into a prime (18047882209537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 909524031 + ... + 909543873.

It is a 1-persistent number, because it is pandigital, but 2⋅18047882209536 = 36095764419072 is not.

Almost surely, 2^{18047882209536} is an apocalyptic number.

18047882209536 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 18047882209536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27841163750400).

18047882209536 is an abundant number, since it is smaller than the sum of its proper divisors (37634445291264).

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

18047882209536 is a wasteful number, since it uses less digits than its factorization.

18047882209536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20226 (or 20209 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 18047882209536 in words is "eighteen trillion, forty-seven billion, eight hundred eighty-two million, two hundred nine thousand, five hundred thirty-six".