135286438408477 has 2 divisors, whose sum is σ = 135286438408478. Its totient is φ = 135286438408476.

The previous prime is 135286438408409. The next prime is 135286438408483. The reversal of 135286438408477 is 774804834682531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130948336746756 + 4338101661721 = 11443266^2 + 2082811^2 .

It is a cyclic number.

It is not a de Polignac number, because 135286438408477 - 2³¹ = 135284290924829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135286438408777) 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 as a sum of consecutive naturals, namely, 67643219204238 + 67643219204239.

It is an arithmetic number, because the mean of its divisors is an integer number (67643219204239).

Almost surely, 2^{135286438408477} is an apocalyptic number.

It is an amenable number.

135286438408477 is a deficient number, since it is larger than the sum of its proper divisors (1).

135286438408477 is an equidigital number, since it uses as much as digits as its factorization.

135286438408477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 867041280, while the sum is 70.

The spelling of 135286438408477 in words is "one hundred thirty-five trillion, two hundred eighty-six billion, four hundred thirty-eight million, four hundred eight thousand, four hundred seventy-seven".