135505215253 has 2 divisors, whose sum is σ = 135505215254. Its totient is φ = 135505215252.

The previous prime is 135505215247. The next prime is 135505215259. The reversal of 135505215253 is 352512505531.

It is a balanced prime because it is at equal distance from previous prime (135505215247) and next prime (135505215259).

It can be written as a sum of positive squares in only one way, i.e., 120008202084 + 15497013169 = 346422^2 + 124487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135505215253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135505215259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67752607626 + 67752607627.

It is an arithmetic number, because the mean of its divisors is an integer number (67752607627).

Almost surely, 2^135505215253 is an apocalyptic number.

It is an amenable number.

135505215253 is a deficient number, since it is larger than the sum of its proper divisors (1).

135505215253 is an equidigital number, since it uses as much as digits as its factorization.

135505215253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 135505215253 in words is "one hundred thirty-five billion, five hundred five million, two hundred fifteen thousand, two hundred fifty-three".