166016556016600 has 96 divisors (see below), whose sum is σ = 387354095407440. Its totient is φ = 66171736512000.

The previous prime is 166016556016589. The next prime is 166016556016609. The reversal of 166016556016600 is 6610655610661.

It is a super-2 number, since 2×166016556016600² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166016556016609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481578295 + ... + 481922905.

Almost surely, 2^{166016556016600} is an apocalyptic number.

166016556016600 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 166016556016600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193677047703720).

166016556016600 is an abundant number, since it is smaller than the sum of its proper divisors (221337539390840).

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

166016556016600 is a wasteful number, since it uses less digits than its factorization.

166016556016600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353141 (or 353132 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 166016556016600 in words is "one hundred sixty-six trillion, sixteen billion, five hundred fifty-six million, sixteen thousand, six hundred".