135531503535531 has 32 divisors (see below), whose sum is σ = 191527068775680. Its totient is φ = 84955647236096.

The previous prime is 135531503535391. The next prime is 135531503535551. The reversal of 135531503535531 is 135535305135531.

It is not a de Polignac number, because 135531503535531 - 2¹⁰ = 135531503534507 is a prime.

It is a super-2 number, since 2×135531503535531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135531503535551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221503840 + ... + 222114866.

It is an arithmetic number, because the mean of its divisors is an integer number (5985220899240).

Almost surely, 2^{135531503535531} is an apocalyptic number.

135531503535531 is a deficient number, since it is larger than the sum of its proper divisors (55995565240149).

135531503535531 is a wasteful number, since it uses less digits than its factorization.

135531503535531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615323.

The product of its (nonzero) digits is 3796875, while the sum is 48.

The spelling of 135531503535531 in words is "one hundred thirty-five trillion, five hundred thirty-one billion, five hundred three million, five hundred thirty-five thousand, five hundred thirty-one".