165670507061172 has 72 divisors (see below), whose sum is σ = 420180574020480. Its totient is φ = 55038624534720.

The previous prime is 165670507061119. The next prime is 165670507061197. The reversal of 165670507061172 is 271160705076561.

165670507061172 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 7 + 0 + 507 + 0 + 61 + 1 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83651778 + ... + 85609350.

It is an arithmetic number, because the mean of its divisors is an integer number (5835841305840).

Almost surely, 2^{165670507061172} is an apocalyptic number.

165670507061172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165670507061172 is an abundant number, since it is smaller than the sum of its proper divisors (254510066959308).

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

165670507061172 is a wasteful number, since it uses less digits than its factorization.

165670507061172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965453 (or 1965448 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 54.

The spelling of 165670507061172 in words is "one hundred sixty-five trillion, six hundred seventy billion, five hundred seven million, sixty-one thousand, one hundred seventy-two".