165486883778 has 16 divisors (see below), whose sum is σ = 254323571040. Its totient is φ = 80712976800.

The previous prime is 165486883777. The next prime is 165486883787. The reversal of 165486883778 is 877388684561.

165486883778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165486883777) 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 7 ways as a sum of consecutive naturals, for example, 397853 + ... + 699471.

It is an arithmetic number, because the mean of its divisors is an integer number (15895223190).

Almost surely, 2^165486883778 is an apocalyptic number.

165486883778 is a deficient number, since it is larger than the sum of its proper divisors (88836687262).

165486883778 is a wasteful number, since it uses less digits than its factorization.

165486883778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308353.

The product of its digits is 433520640, while the sum is 71.

The spelling of 165486883778 in words is "one hundred sixty-five billion, four hundred eighty-six million, eight hundred eighty-three thousand, seven hundred seventy-eight".