166508512528 has 80 divisors (see below), whose sum is σ = 343572134976. Its totient is φ = 77902848000.

The previous prime is 166508512519. The next prime is 166508512529. The reversal of 166508512528 is 825215805661.

It is not an unprimeable number, because it can be changed into a prime (166508512529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43897000 + ... + 43900792.

Almost surely, 2^166508512528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166508512528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171786067488).

166508512528 is an abundant number, since it is smaller than the sum of its proper divisors (177063622448).

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

166508512528 is a wasteful number, since it uses less digits than its factorization.

166508512528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 166508512528 in words is "one hundred sixty-six billion, five hundred eight million, five hundred twelve thousand, five hundred twenty-eight".