162553661065 has 4 divisors (see below), whose sum is σ = 195064393284. Its totient is φ = 130042928848.

The previous prime is 162553661029. The next prime is 162553661087. The reversal of 162553661065 is 560166355261.

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 122041230336 + 40512430729 = 349344^2 + 201277^2 .

It is a cyclic number.

It is not a de Polignac number, because 162553661065 - 2⁹ = 162553660553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16255366102 + ... + 16255366111.

It is an arithmetic number, because the mean of its divisors is an integer number (48766098321).

Almost surely, 2^162553661065 is an apocalyptic number.

It is an amenable number.

162553661065 is a deficient number, since it is larger than the sum of its proper divisors (32510732219).

162553661065 is an equidigital number, since it uses as much as digits as its factorization.

162553661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32510732218.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 162553661065 in words is "one hundred sixty-two billion, five hundred fifty-three million, six hundred sixty-one thousand, sixty-five".