135252020026 has 16 divisors (see below), whose sum is σ = 214839525096. Its totient is φ = 63639863296.

The previous prime is 135252020017. The next prime is 135252020027. The reversal of 135252020026 is 620020252531.

It can be written as a sum of positive squares in 4 ways, for example, as 125192130625 + 10059889401 = 353825^2 + 100299^2 .

It is a super-2 number, since 2×135252020026² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135252019976 and 135252020003.

It is not an unprimeable number, because it can be changed into a prime (135252020027) 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, 19260 + ... + 520456.

Almost surely, 2^135252020026 is an apocalyptic number.

135252020026 is a deficient number, since it is larger than the sum of its proper divisors (79587505070).

135252020026 is a wasteful number, since it uses less digits than its factorization.

135252020026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509153.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 135252020026 its reverse (620020252531), we get a palindrome (755272272557).

The spelling of 135252020026 in words is "one hundred thirty-five billion, two hundred fifty-two million, twenty thousand, twenty-six".