165428723306 has 24 divisors (see below), whose sum is σ = 314897720256. Its totient is φ = 64452748920.

The previous prime is 165428723303. The next prime is 165428723321. The reversal of 165428723306 is 603327824561.

165428723306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165428723303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76728386 + ... + 76730541.

It is an arithmetic number, because the mean of its divisors is an integer number (13120738344).

Almost surely, 2^165428723306 is an apocalyptic number.

165428723306 is a deficient number, since it is larger than the sum of its proper divisors (149468996950).

165428723306 is a wasteful number, since it uses less digits than its factorization.

165428723306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153458954 (or 153458947 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 165428723306 in words is "one hundred sixty-five billion, four hundred twenty-eight million, seven hundred twenty-three thousand, three hundred six".