135135251689 has 8 divisors (see below), whose sum is σ = 136958923080. Its totient is φ = 133321104000.

The previous prime is 135135251683. The next prime is 135135251759. The reversal of 135135251689 is 986152531531.

It can be written as a sum of positive squares in 4 ways, for example, as 58119566400 + 77015685289 = 241080^2 + 277517^2 .

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 135135251689 - 2³ = 135135251681 is a prime.

It is a super-3 number, since 3×135135251689³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135135251681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2352354 + ... + 2409115.

It is an arithmetic number, because the mean of its divisors is an integer number (17119865385).

Almost surely, 2^135135251689 is an apocalyptic number.

It is an amenable number.

135135251689 is a deficient number, since it is larger than the sum of its proper divisors (1823671391).

135135251689 is a wasteful number, since it uses less digits than its factorization.

135135251689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761851.

The product of its digits is 972000, while the sum is 49.

It can be divided in two parts, 1351352 and 51689, that added together give a palindrome (1403041).

The spelling of 135135251689 in words is "one hundred thirty-five billion, one hundred thirty-five million, two hundred fifty-one thousand, six hundred eighty-nine".