166532469642 has 192 divisors, whose sum is σ = 492232446720. Its totient is φ = 40710574080.

The previous prime is 166532469613. The next prime is 166532469643. The reversal of 166532469642 is 246964235661.

166532469642 is a `hidden beast` number, since 1 + 6 + 6 + 532 + 4 + 69 + 6 + 42 = 666.

166532469642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (166532469643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 670458 + ... + 884634.

It is an arithmetic number, because the mean of its divisors is an integer number (2563710660).

Almost surely, 2^166532469642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166532469642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246116223360).

166532469642 is an abundant number, since it is smaller than the sum of its proper divisors (325699977078).

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

166532469642 is a wasteful number, since it uses less digits than its factorization.

166532469642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214234 (or 214217 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 166532469642 in words is "one hundred sixty-six billion, five hundred thirty-two million, four hundred sixty-nine thousand, six hundred forty-two".