134661205177 has 4 divisors (see below), whose sum is σ = 135185178996. Its totient is φ = 134137231360.

The previous prime is 134661205109. The next prime is 134661205183. The reversal of 134661205177 is 771502166431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 771502166431 = 2069 ⋅372886499.

It can be written as a sum of positive squares in 2 ways, for example, as 116592199936 + 18069005241 = 341456^2 + 134421^2 .

It is a cyclic number.

It is not a de Polignac number, because 134661205177 - 2²⁷ = 134526987449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134661208177) 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, 261986524 + ... + 261987037.

It is an arithmetic number, because the mean of its divisors is an integer number (33796294749).

Almost surely, 2^134661205177 is an apocalyptic number.

It is an amenable number.

134661205177 is a deficient number, since it is larger than the sum of its proper divisors (523973819).

134661205177 is an equidigital number, since it uses as much as digits as its factorization.

134661205177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523973818.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 134661205177 in words is "one hundred thirty-four billion, six hundred sixty-one million, two hundred five thousand, one hundred seventy-seven".