135500005531 has 8 divisors (see below), whose sum is σ = 148518750528. Its totient is φ = 122598021000.

The previous prime is 135500005523. The next prime is 135500005559.

135500005531 is nontrivially palindromic in base 10.

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 135500005531 - 2³ = 135500005523 is a prime.

It is a super-2 number, since 2×135500005531² (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 135500005531.

It is not an unprimeable number, because it can be changed into a prime (135500005591) 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, 29187685 + ... + 29192326.

It is an arithmetic number, because the mean of its divisors is an integer number (18564843816).

Almost surely, 2^135500005531 is an apocalyptic number.

135500005531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135500005531 is a deficient number, since it is larger than the sum of its proper divisors (13018744997).

135500005531 is a wasteful number, since it uses less digits than its factorization.

135500005531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58380233.

The product of its (nonzero) digits is 5625, while the sum is 28.

It can be divided in two parts, 13550000 and 5531, that added together give a palindrome (13555531).

The spelling of 135500005531 in words is "one hundred thirty-five billion, five hundred million, five thousand, five hundred thirty-one".