135216465 has 16 divisors (see below), whose sum is σ = 216494208. Its totient is φ = 72066176.

The previous prime is 135216449. The next prime is 135216469. The reversal of 135216465 is 564612531.

It is a cyclic number.

It is not a de Polignac number, because 135216465 - 2⁴ = 135216449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135216469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34012 + ... + 37778.

It is an arithmetic number, because the mean of its divisors is an integer number (13530888).

Almost surely, 2^135216465 is an apocalyptic number.

135216465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135216465 is a deficient number, since it is larger than the sum of its proper divisors (81277743).

135216465 is a wasteful number, since it uses less digits than its factorization.

135216465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168.

The product of its digits is 21600, while the sum is 33.

The square root of 135216465 is about 11628.2614779682. The cubic root of 135216465 is about 513.2668227297.

Adding to 135216465 its reverse (564612531), we get a palindrome (699828996).

The spelling of 135216465 in words is "one hundred thirty-five million, two hundred sixteen thousand, four hundred sixty-five".