165565565601151 has 2 divisors, whose sum is σ = 165565565601152. Its totient is φ = 165565565601150.

The previous prime is 165565565601077. The next prime is 165565565601179. The reversal of 165565565601151 is 151106565565561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165565565601151 - 2²⁹ = 165565028730239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165565565401151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82782782800575 + 82782782800576.

It is an arithmetic number, because the mean of its divisors is an integer number (82782782800576).

Almost surely, 2^{165565565601151} is an apocalyptic number.

165565565601151 is a deficient number, since it is larger than the sum of its proper divisors (1).

165565565601151 is an equidigital number, since it uses as much as digits as its factorization.

165565565601151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250000, while the sum is 58.

The spelling of 165565565601151 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, five hundred sixty-five million, six hundred one thousand, one hundred fifty-one".