166659290284032 has 600 divisors, whose sum is σ = 612806786737376. Its totient is φ = 43954066685952.

The previous prime is 166659290284021. The next prime is 166659290284121. The reversal of 166659290284032 is 230482092956661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 120076458 + ... + 121456470.

Almost surely, 2^{166659290284032} is an apocalyptic number.

166659290284032 is a gapful number since it is divisible by the number (12) 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 166659290284032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306403393368688).

166659290284032 is an abundant number, since it is smaller than the sum of its proper divisors (446147496453344).

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

166659290284032 is an equidigital number, since it uses as much as digits as its factorization.

166659290284032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380073 (or 1380038 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 166659290284032 in words is "one hundred sixty-six trillion, six hundred fifty-nine billion, two hundred ninety million, two hundred eighty-four thousand, thirty-two".