165819655748 has 6 divisors (see below), whose sum is σ = 290184397566. Its totient is φ = 82909827872.

The previous prime is 165819655747. The next prime is 165819655789. The reversal of 165819655748 is 847556918561.

165819655748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 163411594564 + 2408061184 = 404242^2 + 49072^2 .

It is not an unprimeable number, because it can be changed into a prime (165819655741) 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 as a sum of consecutive naturals, namely, 20727456965 + ... + 20727456972.

It is an arithmetic number, because the mean of its divisors is an integer number (48364066261).

Almost surely, 2^165819655748 is an apocalyptic number.

It is an amenable number.

165819655748 is a deficient number, since it is larger than the sum of its proper divisors (124364741818).

165819655748 is a wasteful number, since it uses less digits than its factorization.

165819655748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41454913941 (or 41454913939 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 65.

The spelling of 165819655748 in words is "one hundred sixty-five billion, eight hundred nineteen million, six hundred fifty-five thousand, seven hundred forty-eight".