135315554369 has 2 divisors, whose sum is σ = 135315554370. Its totient is φ = 135315554368.

The previous prime is 135315554327. The next prime is 135315554389. The reversal of 135315554369 is 963455513531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108135745600 + 27179808769 = 328840^2 + 164863^2 .

It is a cyclic number.

It is not a de Polignac number, because 135315554369 - 2³⁶ = 66596077633 is a prime.

It is a super-2 number, since 2×135315554369² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (135315554389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67657777184 + 67657777185.

It is an arithmetic number, because the mean of its divisors is an integer number (67657777185).

Almost surely, 2^135315554369 is an apocalyptic number.

It is an amenable number.

135315554369 is a deficient number, since it is larger than the sum of its proper divisors (1).

135315554369 is an equidigital number, since it uses as much as digits as its factorization.

135315554369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645000, while the sum is 50.

The spelling of 135315554369 in words is "one hundred thirty-five billion, three hundred fifteen million, five hundred fifty-four thousand, three hundred sixty-nine".