135505550021141 has 4 divisors (see below), whose sum is σ = 135650166404172. Its totient is φ = 135360933638112.

The previous prime is 135505550021137. The next prime is 135505550021161. The reversal of 135505550021141 is 141120055505531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18045928802500 + 117459621218641 = 4248050^2 + 10837879^2 .

It is a cyclic number.

It is not a de Polignac number, because 135505550021141 - 2² = 135505550021137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135505550021095 and 135505550021104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135505550021131) 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, 72308190110 + ... + 72308191983.

It is an arithmetic number, because the mean of its divisors is an integer number (33912541601043).

Almost surely, 2^{135505550021141} is an apocalyptic number.

It is an amenable number.

135505550021141 is a deficient number, since it is larger than the sum of its proper divisors (144616383031).

135505550021141 is an equidigital number, since it uses as much as digits as its factorization.

135505550021141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144616383030.

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 135505550021141 in words is "one hundred thirty-five trillion, five hundred five billion, five hundred fifty million, twenty-one thousand, one hundred forty-one".