180166531502552 has 48 divisors (see below), whose sum is σ = 416080870337160. Its totient is φ = 72672214384896.

The previous prime is 180166531502549. The next prime is 180166531502561. The reversal of 180166531502552 is 255205135661081.

It is a self number, because there is not a number n which added to its sum of digits gives 180166531502552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13517890358 + ... + 13517903685.

Almost surely, 2^{180166531502552} is an apocalyptic number.

It is an amenable number.

180166531502552 is an abundant number, since it is smaller than the sum of its proper divisors (235914338834608).

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

180166531502552 is a wasteful number, since it uses less digits than its factorization.

180166531502552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27035794080 (or 27035794069 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 180166531502552 in words is "one hundred eighty trillion, one hundred sixty-six billion, five hundred thirty-one million, five hundred two thousand, five hundred fifty-two".