135775212065 has 8 divisors (see below), whose sum is σ = 163196049768. Its totient is φ = 108442972800.

The previous prime is 135775212059. The next prime is 135775212091. The reversal of 135775212065 is 560212577531.

It can be written as a sum of positive squares in 4 ways, for example, as 150209536 + 135625002529 = 12256^2 + 368273^2 .

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

It is not a de Polignac number, because 135775212065 - 2¹⁴ = 135775195681 is a prime.

It is a super-2 number, since 2×135775212065² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22146236 + ... + 22152365.

It is an arithmetic number, because the mean of its divisors is an integer number (20399506221).

Almost surely, 2^135775212065 is an apocalyptic number.

It is an amenable number.

135775212065 is a deficient number, since it is larger than the sum of its proper divisors (27420837703).

135775212065 is an equidigital number, since it uses as much as digits as its factorization.

135775212065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44299219.

The product of its (nonzero) digits is 441000, while the sum is 44.

Adding to 135775212065 its reverse (560212577531), we get a palindrome (695987789596).

The spelling of 135775212065 in words is "one hundred thirty-five billion, seven hundred seventy-five million, two hundred twelve thousand, sixty-five".