181108545123440 has 40 divisors (see below), whose sum is σ = 459357128088048. Its totient is φ = 65857652771840.

The previous prime is 181108545123367. The next prime is 181108545123463. The reversal of 181108545123440 is 44321545801181.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102902581577 + ... + 102902583336.

Almost surely, 2^{181108545123440} is an apocalyptic number.

181108545123440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181108545123440 is an abundant number, since it is smaller than the sum of its proper divisors (278248582964608).

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

181108545123440 is a wasteful number, since it uses less digits than its factorization.

181108545123440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205805164937 (or 205805164931 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 181108545123440 in words is "one hundred eighty-one trillion, one hundred eight billion, five hundred forty-five million, one hundred twenty-three thousand, four hundred forty".