181863128183382 has 24 divisors (see below), whose sum is σ = 394233894756000. Its totient is φ = 60590717031600.

The previous prime is 181863128183339. The next prime is 181863128183389. The reversal of 181863128183382 is 283381821368181.

181863128183382 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 63 + 12 + 8 + 183 + 382 = 666.

It is a super-2 number, since 2×181863128183382² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181863128183389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2527104369 + ... + 2527176332.

It is an arithmetic number, because the mean of its divisors is an integer number (16426412281500).

Almost surely, 2^{181863128183382} is an apocalyptic number.

181863128183382 is an abundant number, since it is smaller than the sum of its proper divisors (212370766572618).

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

181863128183382 is a wasteful number, since it uses less digits than its factorization.

181863128183382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054282708 (or 5054282705 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 63.

The spelling of 181863128183382 in words is "one hundred eighty-one trillion, eight hundred sixty-three billion, one hundred twenty-eight million, one hundred eighty-three thousand, three hundred eighty-two".