181181112678 has 48 divisors (see below), whose sum is σ = 396053658000. Its totient is φ = 59857842240.

The previous prime is 181181112643. The next prime is 181181112691. The reversal of 181181112678 is 876211181181.

181181112678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1163133 + ... + 1309671.

It is an arithmetic number, because the mean of its divisors is an integer number (8251117875).

Almost surely, 2^181181112678 is an apocalyptic number.

181181112678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

181181112678 is an abundant number, since it is smaller than the sum of its proper divisors (214872545322).

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

181181112678 is a wasteful number, since it uses less digits than its factorization.

181181112678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147157 (or 147154 counting only the distinct ones).

The product of its digits is 43008, while the sum is 45.

The spelling of 181181112678 in words is "one hundred eighty-one billion, one hundred eighty-one million, one hundred twelve thousand, six hundred seventy-eight".