135620353306 has 4 divisors (see below), whose sum is σ = 203430529962. Its totient is φ = 67810176652.

The previous prime is 135620353249. The next prime is 135620353339. The reversal of 135620353306 is 603353026531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603353026531 = 19 ⋅31755422449.

It can be written as a sum of positive squares in only one way, i.e., 135589650625 + 30702681 = 368225^2 + 5541^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33905088325 + ... + 33905088328.

Almost surely, 2^135620353306 is an apocalyptic number.

135620353306 is a deficient number, since it is larger than the sum of its proper divisors (67810176656).

135620353306 is an equidigital number, since it uses as much as digits as its factorization.

135620353306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67810176655.

The product of its (nonzero) digits is 145800, while the sum is 37.

Adding to 135620353306 its reverse (603353026531), we get a palindrome (738973379837).

The spelling of 135620353306 in words is "one hundred thirty-five billion, six hundred twenty million, three hundred fifty-three thousand, three hundred six".