165666269756 has 12 divisors (see below), whose sum is σ = 312217200792. Its totient is φ = 76461355248.

The previous prime is 165666269723. The next prime is 165666269771. The reversal of 165666269756 is 657962666561.

165666269756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 165666269692 and 165666269701.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1592944850 + ... + 1592944953.

It is an arithmetic number, because the mean of its divisors is an integer number (26018100066).

Almost surely, 2^165666269756 is an apocalyptic number.

It is an amenable number.

165666269756 is a deficient number, since it is larger than the sum of its proper divisors (146550931036).

165666269756 is a wasteful number, since it uses less digits than its factorization.

165666269756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185889820 (or 3185889818 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 65.

The spelling of 165666269756 in words is "one hundred sixty-five billion, six hundred sixty-six million, two hundred sixty-nine thousand, seven hundred fifty-six".