135255505201 has 4 divisors (see below), whose sum is σ = 138554420004. Its totient is φ = 131956590400.

The previous prime is 135255505199. The next prime is 135255505241. The reversal of 135255505201 is 102505552531.

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 16230505201 + 119025000000 = 127399^2 + 345000^2 .

It is a cyclic number.

It is not a de Polignac number, because 135255505201 - 2¹ = 135255505199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135255505241) 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, 1649457340 + ... + 1649457421.

It is an arithmetic number, because the mean of its divisors is an integer number (34638605001).

Almost surely, 2^135255505201 is an apocalyptic number.

It is an amenable number.

135255505201 is a deficient number, since it is larger than the sum of its proper divisors (3298914803).

135255505201 is an equidigital number, since it uses as much as digits as its factorization.

135255505201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298914802.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 135255505201 in words is "one hundred thirty-five billion, two hundred fifty-five million, five hundred five thousand, two hundred one".