135548686673 has 2 divisors, whose sum is σ = 135548686674. Its totient is φ = 135548686672.

The previous prime is 135548686643. The next prime is 135548686699. The reversal of 135548686673 is 376686845531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105136117009 + 30412569664 = 324247^2 + 174392^2 .

It is a cyclic number.

It is not a de Polignac number, because 135548686673 - 2²⁰ = 135547638097 is a prime.

It is not a weakly prime, because it can be changed into another prime (135548686613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67774343336 + 67774343337.

It is an arithmetic number, because the mean of its divisors is an integer number (67774343337).

Almost surely, 2^135548686673 is an apocalyptic number.

It is an amenable number.

135548686673 is a deficient number, since it is larger than the sum of its proper divisors (1).

135548686673 is an equidigital number, since it uses as much as digits as its factorization.

135548686673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 62.

The spelling of 135548686673 in words is "one hundred thirty-five billion, five hundred forty-eight million, six hundred eighty-six thousand, six hundred seventy-three".