166325966560 has 384 divisors, whose sum is σ = 463867084800. Its totient is φ = 55808040960.

The previous prime is 166325966501. The next prime is 166325966563. The reversal of 166325966560 is 65669523661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166325966563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155589706 + ... + 155590774.

It is an arithmetic number, because the mean of its divisors is an integer number (1207987200).

Almost surely, 2^166325966560 is an apocalyptic number.

166325966560 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 166325966560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231933542400).

166325966560 is an abundant number, since it is smaller than the sum of its proper divisors (297541118240).

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

166325966560 is a wasteful number, since it uses less digits than its factorization.

166325966560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 55.

The spelling of 166325966560 in words is "one hundred sixty-six billion, three hundred twenty-five million, nine hundred sixty-six thousand, five hundred sixty".