166836140352 has 168 divisors, whose sum is σ = 547073669376. Its totient is φ = 47619247104.

The previous prime is 166836140351. The next prime is 166836140377. The reversal of 166836140352 is 253041638661.

166836140352 is a `hidden beast` number, since 1 + 66 + 83 + 61 + 403 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 166836140298 and 166836140307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166836140351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4063993 + ... + 4104839.

Almost surely, 2^166836140352 is an apocalyptic number.

166836140352 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 166836140352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273536834688).

166836140352 is an abundant number, since it is smaller than the sum of its proper divisors (380237529024).

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

166836140352 is a wasteful number, since it uses less digits than its factorization.

166836140352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41885 (or 41872 counting only the distinct ones).

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

The spelling of 166836140352 in words is "one hundred sixty-six billion, eight hundred thirty-six million, one hundred forty thousand, three hundred fifty-two".