134738247569 has 4 divisors (see below), whose sum is σ = 134806540596. Its totient is φ = 134669954544.

The previous prime is 134738247557. The next prime is 134738247577. The reversal of 134738247569 is 965742837431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 965742837431 = 161831 ⋅5967601.

It can be written as a sum of positive squares in 2 ways, for example, as 88818900625 + 45919346944 = 298025^2 + 214288^2 .

It is a cyclic number.

It is not a de Polignac number, because 134738247569 - 2²⁰ = 134737198993 is a prime.

It is a super-2 number, since 2×134738247569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134738247529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34143554 + ... + 34147499.

It is an arithmetic number, because the mean of its divisors is an integer number (33701635149).

Almost surely, 2^134738247569 is an apocalyptic number.

It is an amenable number.

134738247569 is a deficient number, since it is larger than the sum of its proper divisors (68293027).

134738247569 is an equidigital number, since it uses as much as digits as its factorization.

134738247569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68293026.

The product of its digits is 30481920, while the sum is 59.

The spelling of 134738247569 in words is "one hundred thirty-four billion, seven hundred thirty-eight million, two hundred forty-seven thousand, five hundred sixty-nine".