135207511277 has 4 divisors (see below), whose sum is σ = 135229635420. Its totient is φ = 135185387136.

The previous prime is 135207511259. The next prime is 135207511301. The reversal of 135207511277 is 772115702531.

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 94481849641 + 40725661636 = 307379^2 + 201806^2 .

It is a cyclic number.

It is not a de Polignac number, because 135207511277 - 2²⁰ = 135206462701 is a prime.

It is a super-2 number, since 2×135207511277² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135207513277) 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, 11052902 + ... + 11065127.

It is an arithmetic number, because the mean of its divisors is an integer number (33807408855).

Almost surely, 2^135207511277 is an apocalyptic number.

It is an amenable number.

135207511277 is a deficient number, since it is larger than the sum of its proper divisors (22124143).

135207511277 is an equidigital number, since it uses as much as digits as its factorization.

135207511277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22124142.

The product of its (nonzero) digits is 102900, while the sum is 41.

The spelling of 135207511277 in words is "one hundred thirty-five billion, two hundred seven million, five hundred eleven thousand, two hundred seventy-seven".