166834865320 has 32 divisors (see below), whose sum is σ = 375392533320. Its totient is φ = 66731441920.

The previous prime is 166834865317. The next prime is 166834865347. The reversal of 166834865320 is 23568438661.

It can be written as a sum of positive squares in 4 ways, for example, as 70674095716 + 96160769604 = 265846^2 + 310098^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301214 + ... + 1423666.

Almost surely, 2^166834865320 is an apocalyptic number.

166834865320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166834865320 is an abundant number, since it is smaller than the sum of its proper divisors (208557668000).

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

166834865320 is a wasteful number, since it uses less digits than its factorization.

166834865320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156525 (or 156521 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 166834865320 in words is "one hundred sixty-six billion, eight hundred thirty-four million, eight hundred sixty-five thousand, three hundred twenty".