166491448200 has 1152 divisors, whose sum is σ = 777164544000. Its totient is φ = 30838579200.

The previous prime is 166491448199. The next prime is 166491448223. The reversal of 166491448200 is 2844194661.

166491448200 is a `hidden beast` number, since 166 + 4 + 9 + 1 + 4 + 482 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 44765941 + ... + 44769659.

It is an arithmetic number, because the mean of its divisors is an integer number (674622000).

Almost surely, 2^166491448200 is an apocalyptic number.

166491448200 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 166491448200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388582272000).

166491448200 is an abundant number, since it is smaller than the sum of its proper divisors (610673095800).

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

166491448200 is a wasteful number, since it uses less digits than its factorization.

166491448200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 166491448200 in words is "one hundred sixty-six billion, four hundred ninety-one million, four hundred forty-eight thousand, two hundred".