164259559505 has 4 divisors (see below), whose sum is σ = 197111471412. Its totient is φ = 131407647600.

The previous prime is 164259559501. The next prime is 164259559507. The reversal of 164259559505 is 505955952461.

164259559505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45895349824 + 118364209681 = 214232^2 + 344041^2 .

It is not a de Polignac number, because 164259559505 - 2² = 164259559501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164259559501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16425955946 + ... + 16425955955.

It is an arithmetic number, because the mean of its divisors is an integer number (49277867853).

Almost surely, 2^164259559505 is an apocalyptic number.

It is an amenable number.

164259559505 is a deficient number, since it is larger than the sum of its proper divisors (32851911907).

164259559505 is an equidigital number, since it uses as much as digits as its factorization.

164259559505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32851911906.

The product of its (nonzero) digits is 12150000, while the sum is 56.

The spelling of 164259559505 in words is "one hundred sixty-four billion, two hundred fifty-nine million, five hundred fifty-nine thousand, five hundred five".