66200550170 has 64 divisors (see below), whose sum is σ = 133243004160. Its totient is φ = 23551638528.

The previous prime is 66200550167. The next prime is 66200550179. The reversal of 66200550170 is 7105500266.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66200550179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222536 + ... + 426524.

It is an arithmetic number, because the mean of its divisors is an integer number (2081921940).

Almost surely, 2^66200550170 is an apocalyptic number.

66200550170 is an abundant number, since it is smaller than the sum of its proper divisors (67042453990).

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

66200550170 is a wasteful number, since it uses less digits than its factorization.

66200550170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204119.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 66200550170 in words is "sixty-six billion, two hundred million, five hundred fifty thousand, one hundred seventy".