135706826533 has 6 divisors (see below), whose sum is σ = 138315646994. Its totient is φ = 133146317616.

The previous prime is 135706826527. The next prime is 135706826543. The reversal of 135706826533 is 335628607531.

It can be written as a sum of positive squares in 3 ways, for example, as 91262597409 + 44444229124 = 302097^2 + 210818^2 .

It is not a de Polignac number, because 135706826533 - 2⁵ = 135706826501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135706826543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24152910 + ... + 24158527.

Almost surely, 2^135706826533 is an apocalyptic number.

It is an amenable number.

135706826533 is a deficient number, since it is larger than the sum of its proper divisors (2608820461).

135706826533 is an frugal number, since it uses more digits than its factorization.

135706826533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48311543 (or 48311490 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 135706826533 in words is "one hundred thirty-five billion, seven hundred six million, eight hundred twenty-six thousand, five hundred thirty-three".