135030015257 has 2 divisors, whose sum is σ = 135030015258. Its totient is φ = 135030015256.

The previous prime is 135030015223. The next prime is 135030015319. The reversal of 135030015257 is 752510030531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93662929936 + 41367085321 = 306044^2 + 203389^2 .

It is a cyclic number.

It is not a de Polignac number, because 135030015257 - 2¹⁰ = 135030014233 is a prime.

It is not a weakly prime, because it can be changed into another prime (135030011257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67515007628 + 67515007629.

It is an arithmetic number, because the mean of its divisors is an integer number (67515007629).

Almost surely, 2^135030015257 is an apocalyptic number.

It is an amenable number.

135030015257 is a deficient number, since it is larger than the sum of its proper divisors (1).

135030015257 is an equidigital number, since it uses as much as digits as its factorization.

135030015257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 32.

Adding to 135030015257 its reverse (752510030531), we get a palindrome (887540045788).

The spelling of 135030015257 in words is "one hundred thirty-five billion, thirty million, fifteen thousand, two hundred fifty-seven".