135538835531 has 12 divisors (see below), whose sum is σ = 152784115992. Its totient is φ = 119242368000.

The previous prime is 135538835519. The next prime is 135538835563.

135538835531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 135538835531 - 2¹⁴ = 135538819147 is a prime.

It is a super-2 number, since 2×135538835531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135538835531.

It is not an unprimeable number, because it can be changed into a prime (135538835581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6400310 + ... + 6421451.

It is an arithmetic number, because the mean of its divisors is an integer number (12732009666).

Almost surely, 2^135538835531 is an apocalyptic number.

135538835531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135538835531 is a deficient number, since it is larger than the sum of its proper divisors (17245280461).

135538835531 is a wasteful number, since it uses less digits than its factorization.

135538835531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12821834 (or 12821803 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 50.

The spelling of 135538835531 in words is "one hundred thirty-five billion, five hundred thirty-eight million, eight hundred thirty-five thousand, five hundred thirty-one".