166485741800 has 288 divisors, whose sum is σ = 471230910720. Its totient is φ = 54475545600.

The previous prime is 166485741761. The next prime is 166485741811. The reversal of 166485741800 is 8147584661.

It is a Harshad number since it is a multiple of its sum of digits (50).

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 71 ways as a sum of consecutive naturals, for example, 22173647 + ... + 22181153.

It is an arithmetic number, because the mean of its divisors is an integer number (1636218440).

Almost surely, 2^166485741800 is an apocalyptic number.

166485741800 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 166485741800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235615455360).

166485741800 is an abundant number, since it is smaller than the sum of its proper divisors (304745168920).

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

166485741800 is a wasteful number, since it uses less digits than its factorization.

166485741800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641 (or 7625 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 166485741800 in words is "one hundred sixty-six billion, four hundred eighty-five million, seven hundred forty-one thousand, eight hundred".