180581139342 has 20 divisors (see below), whose sum is σ = 404635516296. Its totient is φ = 60193713060.

The previous prime is 180581139341. The next prime is 180581139391. The reversal of 180581139342 is 243931185081.

180581139342 is a `hidden beast` number, since 1 + 8 + 0 + 581 + 1 + 39 + 34 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180581139341) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 557349034 + ... + 557349357.

Almost surely, 2^180581139342 is an apocalyptic number.

180581139342 is an abundant number, since it is smaller than the sum of its proper divisors (224054376954).

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

180581139342 is a wasteful number, since it uses less digits than its factorization.

180581139342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114698405 (or 1114698396 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 180581139342 in words is "one hundred eighty billion, five hundred eighty-one million, one hundred thirty-nine thousand, three hundred forty-two".