166395936852 has 192 divisors, whose sum is σ = 442743840000. Its totient is φ = 54031380480.

The previous prime is 166395936787. The next prime is 166395936857. The reversal of 166395936852 is 258639593661.

166395936852 is a `hidden beast` number, since 1 + 6 + 6 + 39 + 593 + 6 + 8 + 5 + 2 = 666.

166395936852 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166395936852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166395936857) 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, 252497299 + ... + 252497957.

It is an arithmetic number, because the mean of its divisors is an integer number (2305957500).

Almost surely, 2^166395936852 is an apocalyptic number.

166395936852 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 166395936852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221371920000).

166395936852 is an abundant number, since it is smaller than the sum of its proper divisors (276347903148).

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

166395936852 is a wasteful number, since it uses less digits than its factorization.

166395936852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1103 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 63.

The spelling of 166395936852 in words is "one hundred sixty-six billion, three hundred ninety-five million, nine hundred thirty-six thousand, eight hundred fifty-two".