165622444005505 has 8 divisors (see below), whose sum is σ = 198747002437992. Its totient is φ = 132497908783488.

The previous prime is 165622444005481. The next prime is 165622444005511. The reversal of 165622444005505 is 505500444226561.

It can be written as a sum of positive squares in 4 ways, for example, as 8185498382961 + 157436945622544 = 2861031^2 + 12547388^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165622444005505 - 2¹³ = 165622443997313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22048269 + ... + 28589701.

It is an arithmetic number, because the mean of its divisors is an integer number (24843375304749).

Almost surely, 2^{165622444005505} is an apocalyptic number.

It is an amenable number.

165622444005505 is a deficient number, since it is larger than the sum of its proper divisors (33124558432487).

165622444005505 is an equidigital number, since it uses as much as digits as its factorization.

165622444005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605235.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 165622444005505 in words is "one hundred sixty-five trillion, six hundred twenty-two billion, four hundred forty-four million, five thousand, five hundred five".