135444484444531 has 16 divisors (see below), whose sum is σ = 138954734138880. Its totient is φ = 131961635799840.

The previous prime is 135444484444523. The next prime is 135444484444697.

It is a happy number.

135444484444531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 135444484444531 - 2³ = 135444484444523 is a prime.

It is a super-2 number, since 2×135444484444531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135444484144531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3646345 + ... + 16857781.

It is an arithmetic number, because the mean of its divisors is an integer number (8684670883680).

Almost surely, 2^{135444484444531} is an apocalyptic number.

135444484444531 is a deficient number, since it is larger than the sum of its proper divisors (3510249694349).

135444484444531 is a wasteful number, since it uses less digits than its factorization.

135444484444531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13212474.

The product of its digits is 117964800, while the sum is 58.

The spelling of 135444484444531 in words is "one hundred thirty-five trillion, four hundred forty-four billion, four hundred eighty-four million, four hundred forty-four thousand, five hundred thirty-one".