181343344252 has 24 divisors (see below), whose sum is σ = 362811187424. Its totient is φ = 77691897792.

The previous prime is 181343344201. The next prime is 181343344253. The reversal of 181343344252 is 252443343181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181343344253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028463 + ... + 1191814.

Almost surely, 2^181343344252 is an apocalyptic number.

It is an amenable number.

181343344252 is an abundant number, since it is smaller than the sum of its proper divisors (181467843172).

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

181343344252 is a wasteful number, since it uses less digits than its factorization.

181343344252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223205 (or 2223203 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

The spelling of 181343344252 in words is "one hundred eighty-one billion, three hundred forty-three million, three hundred forty-four thousand, two hundred fifty-two".