165652525321141 has 4 divisors (see below), whose sum is σ = 165653432885484. Its totient is φ = 165651617756800.

The previous prime is 165652525321079. The next prime is 165652525321159. The reversal of 165652525321141 is 141123525256561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120404314952100 + 45248210369041 = 10972890^2 + 6726679^2 .

It is a cyclic number.

It is not a de Polignac number, because 165652525321141 - 2¹⁵ = 165652525288373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165652525321741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453508330 + ... + 453873451.

It is an arithmetic number, because the mean of its divisors is an integer number (41413358221371).

Almost surely, 2^{165652525321141} is an apocalyptic number.

It is an amenable number.

165652525321141 is a deficient number, since it is larger than the sum of its proper divisors (907564343).

165652525321141 is an equidigital number, since it uses as much as digits as its factorization.

165652525321141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907564342.

The product of its digits is 2160000, while the sum is 49.

The spelling of 165652525321141 in words is "one hundred sixty-five trillion, six hundred fifty-two billion, five hundred twenty-five million, three hundred twenty-one thousand, one hundred forty-one".