165565565601076 has 12 divisors (see below), whose sum is σ = 289740116731072. Its totient is φ = 82782675106488.

The previous prime is 165565565601031. The next prime is 165565565601077. The reversal of 165565565601076 is 670106565565561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 165565565600999 and 165565565601017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165565565601077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23413590 + ... + 29653453.

Almost surely, 2^{165565565601076} is an apocalyptic number.

It is an amenable number.

165565565601076 is a deficient number, since it is larger than the sum of its proper divisors (124174551129996).

165565565601076 is a wasteful number, since it uses less digits than its factorization.

165565565601076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53847030 (or 53847028 counting only the distinct ones).

The product of its (nonzero) digits is 170100000, while the sum is 64.

The spelling of 165565565601076 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, five hundred sixty-five million, six hundred one thousand, seventy-six".