165447566928 has 160 divisors (see below), whose sum is σ = 560246046720. Its totient is φ = 45745845120.

The previous prime is 165447566861. The next prime is 165447566929. The reversal of 165447566928 is 829665744561.

165447566928 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 47 + 566 + 9 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165447566929) 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, 788700 + ... + 976187.

It is an arithmetic number, because the mean of its divisors is an integer number (3501537792).

Almost surely, 2^165447566928 is an apocalyptic number.

165447566928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165447566928 is an abundant number, since it is smaller than the sum of its proper divisors (394798479792).

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

165447566928 is a wasteful number, since it uses less digits than its factorization.

165447566928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764942 (or 1764930 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 165447566928 in words is "one hundred sixty-five billion, four hundred forty-seven million, five hundred sixty-six thousand, nine hundred twenty-eight".