166542124532 has 18 divisors (see below), whose sum is σ = 339032182482. Its totient is φ = 71375196144.

The previous prime is 166542124519. The next prime is 166542124621. The reversal of 166542124532 is 235421245661.

It can be written as a sum of positive squares in only one way, i.e., 114728528656 + 51813595876 = 338716^2 + 227626^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166542124532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424852163 + ... + 424852554.

It is an arithmetic number, because the mean of its divisors is an integer number (18835121249).

Almost surely, 2^166542124532 is an apocalyptic number.

It is an amenable number.

166542124532 is an abundant number, since it is smaller than the sum of its proper divisors (172490057950).

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

166542124532 is a wasteful number, since it uses less digits than its factorization.

166542124532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849704735 (or 849704726 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The spelling of 166542124532 in words is "one hundred sixty-six billion, five hundred forty-two million, one hundred twenty-four thousand, five hundred thirty-two".