166635823104 has 448 divisors, whose sum is σ = 510709224960. Its totient is φ = 54344908800.

The previous prime is 166635823103. The next prime is 166635823117. The reversal of 166635823104 is 401328536661.

It is a self number, because there is not a number n which added to its sum of digits gives 166635823104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166635823103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1272029119 + ... + 1272029249.

Almost surely, 2^166635823104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166635823104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255354612480).

166635823104 is an abundant number, since it is smaller than the sum of its proper divisors (344073401856).

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

166635823104 is an frugal number, since it uses more digits than its factorization.

166635823104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 166635823104 in words is "one hundred sixty-six billion, six hundred thirty-five million, eight hundred twenty-three thousand, one hundred four".