165842676109 has 6 divisors (see below), whose sum is σ = 182289883790. Its totient is φ = 150766069080.

The previous prime is 165842676089. The next prime is 165842676121. The reversal of 165842676109 is 901676248561.

It can be written as a sum of positive squares in only one way, i.e., 160337778084 + 5504898025 = 400422^2 + 74195^2 .

It is not a de Polignac number, because 165842676109 - 2⁹ = 165842675597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165842676109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165842676149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685300194 + ... + 685300435.

Almost surely, 2^165842676109 is an apocalyptic number.

It is an amenable number.

165842676109 is a deficient number, since it is larger than the sum of its proper divisors (16447207681).

165842676109 is a wasteful number, since it uses less digits than its factorization.

165842676109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370600651 (or 1370600640 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 165842676109 in words is "one hundred sixty-five billion, eight hundred forty-two million, six hundred seventy-six thousand, one hundred nine".