135451318216493 has 2 divisors, whose sum is σ = 135451318216494. Its totient is φ = 135451318216492.

The previous prime is 135451318216483. The next prime is 135451318216547. The reversal of 135451318216493 is 394612813154531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70173676642729 + 65277641573764 = 8376973^2 + 8079458^2 .

It is a cyclic number.

It is not a de Polignac number, because 135451318216493 - 2¹⁰ = 135451318215469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135451318216483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67725659108246 + 67725659108247.

It is an arithmetic number, because the mean of its divisors is an integer number (67725659108247).

Almost surely, 2^{135451318216493} is an apocalyptic number.

It is an amenable number.

135451318216493 is a deficient number, since it is larger than the sum of its proper divisors (1).

135451318216493 is an equidigital number, since it uses as much as digits as its factorization.

135451318216493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 56.

The spelling of 135451318216493 in words is "one hundred thirty-five trillion, four hundred fifty-one billion, three hundred eighteen million, two hundred sixteen thousand, four hundred ninety-three".