165565565601052 has 6 divisors (see below), whose sum is σ = 289739739801848. Its totient is φ = 82782782800524.

The previous prime is 165565565601031. The next prime is 165565565601077. The reversal of 165565565601052 is 250106565565561.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20695695700128 + ... + 20695695700135.

Almost surely, 2^{165565565601052} is an apocalyptic number.

It is an amenable number.

165565565601052 is a deficient number, since it is larger than the sum of its proper divisors (124174174200796).

165565565601052 is a wasteful number, since it uses less digits than its factorization.

165565565601052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41391391400267 (or 41391391400265 counting only the distinct ones).

The product of its (nonzero) digits is 40500000, while the sum is 58.

The spelling of 165565565601052 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, five hundred sixty-five million, six hundred one thousand, fifty-two".