166212573800 has 192 divisors, whose sum is σ = 500657539200. Its totient is φ = 49834828800.

The previous prime is 166212573797. The next prime is 166212573841. The reversal of 166212573800 is 8375212661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105470 + ... + 586130.

It is an arithmetic number, because the mean of its divisors is an integer number (2607591350).

Almost surely, 2^166212573800 is an apocalyptic number.

166212573800 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 166212573800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250328769600).

166212573800 is an abundant number, since it is smaller than the sum of its proper divisors (334444965400).

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

166212573800 is a wasteful number, since it uses less digits than its factorization.

166212573800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480716 (or 480707 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 166212573800 in words is "one hundred sixty-six billion, two hundred twelve million, five hundred seventy-three thousand, eight hundred".