166428323600 has 720 divisors, whose sum is σ = 538732233216. Its totient is φ = 48771072000.

The previous prime is 166428323549. The next prime is 166428323629. The reversal of 166428323600 is 6323824661.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 247292864 + ... + 247293536.

Almost surely, 2^166428323600 is an apocalyptic number.

166428323600 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 166428323600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269366116608).

166428323600 is an abundant number, since it is smaller than the sum of its proper divisors (372303909616).

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

166428323600 is a wasteful number, since it uses less digits than its factorization.

166428323600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 166428323600 in words is "one hundred sixty-six billion, four hundred twenty-eight million, three hundred twenty-three thousand, six hundred".