181969610112 has 96 divisors (see below), whose sum is σ = 523768223160. Its totient is φ = 60641280000.

The previous prime is 181969610111. The next prime is 181969610131. The reversal of 181969610112 is 211016969181.

181969610112 is a `hidden beast` number, since 1 + 8 + 19 + 6 + 9 + 610 + 1 + 12 = 666.

181969610112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×181969610112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181969610111) 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 11 ways as a sum of consecutive naturals, for example, 5144487 + ... + 5179737.

Almost surely, 2^181969610112 is an apocalyptic number.

181969610112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181969610112 is an abundant number, since it is smaller than the sum of its proper divisors (341798613048).

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

181969610112 is a wasteful number, since it uses less digits than its factorization.

181969610112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39752 (or 39737 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The spelling of 181969610112 in words is "one hundred eighty-one billion, nine hundred sixty-nine million, six hundred ten thousand, one hundred twelve".