165600166446 has 128 divisors (see below), whose sum is σ = 455091033600. Its totient is φ = 43883700480.

The previous prime is 165600166441. The next prime is 165600166453. The reversal of 165600166446 is 644661006561.

It is a happy number.

165600166446 is a `hidden beast` number, since 16 + 560 + 0 + 16 + 64 + 4 + 6 = 666.

165600166446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165600166441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 417631 + ... + 711066.

It is an arithmetic number, because the mean of its divisors is an integer number (3555398700).

Almost surely, 2^165600166446 is an apocalyptic number.

165600166446 is an abundant number, since it is smaller than the sum of its proper divisors (289490867154).

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

165600166446 is a wasteful number, since it uses less digits than its factorization.

165600166446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128751 (or 1128745 counting only the distinct ones).

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

The spelling of 165600166446 in words is "one hundred sixty-five billion, six hundred million, one hundred sixty-six thousand, four hundred forty-six".