166429665280 has 96 divisors (see below), whose sum is σ = 412216197120. Its totient is φ = 64424263680.

The previous prime is 166429665263. The next prime is 166429665299. The reversal of 166429665280 is 82566924661.

166429665280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55297 + ... + 579583.

It is an arithmetic number, because the mean of its divisors is an integer number (4293918720).

Almost surely, 2^166429665280 is an apocalyptic number.

166429665280 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 166429665280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206108098560).

166429665280 is an abundant number, since it is smaller than the sum of its proper divisors (245786531840).

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

166429665280 is an equidigital number, since it uses as much as digits as its factorization.

166429665280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524345 (or 524325 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 166429665280 in words is "one hundred sixty-six billion, four hundred twenty-nine million, six hundred sixty-five thousand, two hundred eighty".