165666650550060 has 192 divisors, whose sum is σ = 537239639591424. Its totient is φ = 37697825280000.

The previous prime is 165666650550059. The next prime is 165666650550173. The reversal of 165666650550060 is 60055056666561.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15607566 + ... + 23977685.

It is an arithmetic number, because the mean of its divisors is an integer number (2798123122872).

Almost surely, 2^{165666650550060} is an apocalyptic number.

165666650550060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165666650550060 is an abundant number, since it is smaller than the sum of its proper divisors (371572989041364).

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

165666650550060 is a wasteful number, since it uses less digits than its factorization.

165666650550060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39585664 (or 39585662 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 165666650550060 in words is "one hundred sixty-five trillion, six hundred sixty-six billion, six hundred fifty million, five hundred fifty thousand, sixty".