135354521343 has 4 divisors (see below), whose sum is σ = 180472695128. Its totient is φ = 90236347560.

The previous prime is 135354521317. The next prime is 135354521369. The reversal of 135354521343 is 343125453531.

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

It is an interprime number because it is at equal distance from previous prime (135354521317) and next prime (135354521369).

It is not a de Polignac number, because 135354521343 - 2¹² = 135354517247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135354521303) 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, 22559086888 + ... + 22559086893.

It is an arithmetic number, because the mean of its divisors is an integer number (45118173782).

Almost surely, 2^135354521343 is an apocalyptic number.

135354521343 is a deficient number, since it is larger than the sum of its proper divisors (45118173785).

135354521343 is an equidigital number, since it uses as much as digits as its factorization.

135354521343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45118173784.

The product of its digits is 324000, while the sum is 39.

Adding to 135354521343 its reverse (343125453531), we get a palindrome (478479974874).

The spelling of 135354521343 in words is "one hundred thirty-five billion, three hundred fifty-four million, five hundred twenty-one thousand, three hundred forty-three".