135447744531 has 8 divisors (see below), whose sum is σ = 197014901184. Its totient is φ = 82089542120.

The previous prime is 135447744503. The next prime is 135447744539.

135447744531 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 135447744531 - 2⁵ = 135447744499 is a prime.

It is a super-2 number, since 2×135447744531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135447744539) 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, 2052238521 + ... + 2052238586.

It is an arithmetic number, because the mean of its divisors is an integer number (24626862648).

Almost surely, 2^135447744531 is an apocalyptic number.

135447744531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135447744531 is a deficient number, since it is larger than the sum of its proper divisors (61567156653).

135447744531 is a wasteful number, since it uses less digits than its factorization.

135447744531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104477121.

The product of its digits is 2822400, while the sum is 48.

It can be divided in two parts, 135447 and 744531, that added together give a palindrome (879978).

The spelling of 135447744531 in words is "one hundred thirty-five billion, four hundred forty-seven million, seven hundred forty-four thousand, five hundred thirty-one".