181129289132 has 24 divisors (see below), whose sum is σ = 360826728192. Its totient is φ = 78751864400.

The previous prime is 181129289113. The next prime is 181129289171. The reversal of 181129289132 is 231982921181.

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, 89489744 + ... + 89491767.

It is an arithmetic number, because the mean of its divisors is an integer number (15034447008).

Almost surely, 2^181129289132 is an apocalyptic number.

It is an amenable number.

181129289132 is a deficient number, since it is larger than the sum of its proper divisors (179697439060).

181129289132 is a wasteful number, since it uses less digits than its factorization.

181129289132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178981549 (or 178981547 counting only the distinct ones).

The product of its digits is 124416, while the sum is 47.

The spelling of 181129289132 in words is "one hundred eighty-one billion, one hundred twenty-nine million, two hundred eighty-nine thousand, one hundred thirty-two".