181326257132 has 12 divisors (see below), whose sum is σ = 317432271576. Its totient is φ = 90631322400.

The previous prime is 181326257113. The next prime is 181326257171. The reversal of 181326257132 is 231752623181.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 181326257132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7938713 + ... + 7961520.

It is an arithmetic number, because the mean of its divisors is an integer number (26452689298).

Almost surely, 2^181326257132 is an apocalyptic number.

It is an amenable number.

181326257132 is a deficient number, since it is larger than the sum of its proper divisors (136106014444).

181326257132 is a wasteful number, since it uses less digits than its factorization.

181326257132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15903088 (or 15903086 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The spelling of 181326257132 in words is "one hundred eighty-one billion, three hundred twenty-six million, two hundred fifty-seven thousand, one hundred thirty-two".