166530642300 has 324 divisors, whose sum is σ = 578313485568. Its totient is φ = 40049856000.

The previous prime is 166530642283. The next prime is 166530642319. The reversal of 166530642300 is 3246035661.

166530642300 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 3 + 0 + 642 + 3 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 13824280 + ... + 13836320.

Almost surely, 2^166530642300 is an apocalyptic number.

166530642300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166530642300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289156742784).

166530642300 is an abundant number, since it is smaller than the sum of its proper divisors (411782843268).

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

166530642300 is a wasteful number, since it uses less digits than its factorization.

166530642300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12210 (or 12189 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 166530642300 its reverse (3246035661), we get a palindrome (169776677961).

The spelling of 166530642300 in words is "one hundred sixty-six billion, five hundred thirty million, six hundred forty-two thousand, three hundred".