165254727545566 has 16 divisors (see below), whose sum is σ = 257648855590224. Its totient is φ = 79425587055744.

The previous prime is 165254727545563. The next prime is 165254727545573. The reversal of 165254727545566 is 665545727452561.

It is a junction number, because it is equal to n+sod(n) for n = 165254727545495 and 165254727545504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165254727545561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13452837195 + ... + 13452849478.

It is an arithmetic number, because the mean of its divisors is an integer number (16103053474389).

Almost surely, 2^{165254727545566} is an apocalyptic number.

165254727545566 is a deficient number, since it is larger than the sum of its proper divisors (92394128044658).

165254727545566 is a wasteful number, since it uses less digits than its factorization.

165254727545566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26905686795.

The product of its digits is 2116800000, while the sum is 70.

The spelling of 165254727545566 in words is "one hundred sixty-five trillion, two hundred fifty-four billion, seven hundred twenty-seven million, five hundred forty-five thousand, five hundred sixty-six".