162621017165 has 4 divisors (see below), whose sum is σ = 195145220604. Its totient is φ = 130096813728.

The previous prime is 162621017147. The next prime is 162621017171. The reversal of 162621017165 is 561710126261.

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 118756741321 + 43864275844 = 344611^2 + 209438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162621017165 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 in 3 ways as a sum of consecutive naturals, for example, 16262101712 + ... + 16262101721.

It is an arithmetic number, because the mean of its divisors is an integer number (48786305151).

Almost surely, 2^162621017165 is an apocalyptic number.

It is an amenable number.

162621017165 is a deficient number, since it is larger than the sum of its proper divisors (32524203439).

162621017165 is an equidigital number, since it uses as much as digits as its factorization.

162621017165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32524203438.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 162621017165 in words is "one hundred sixty-two billion, six hundred twenty-one million, seventeen thousand, one hundred sixty-five".