135443161344531 has 4 divisors (see below), whose sum is σ = 180590881792712. Its totient is φ = 90295440896352.

The previous prime is 135443161344521. The next prime is 135443161344599.

It is a happy number.

135443161344531 is nontrivially palindromic in base 10.

135443161344531 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135443161344531 - 2²⁵ = 135443127790099 is a prime.

It is a super-2 number, since 2×135443161344531² (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 (135443161344511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22573860224086 + ... + 22573860224091.

It is an arithmetic number, because the mean of its divisors is an integer number (45147720448178).

Almost surely, 2^{135443161344531} is an apocalyptic number.

135443161344531 is a deficient number, since it is larger than the sum of its proper divisors (45147720448181).

135443161344531 is an equidigital number, since it uses as much as digits as its factorization.

135443161344531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45147720448180.

The product of its digits is 3110400, while the sum is 48.

The spelling of 135443161344531 in words is "one hundred thirty-five trillion, four hundred forty-three billion, one hundred sixty-one million, three hundred forty-four thousand, five hundred thirty-one".