135305254457 has 4 divisors (see below), whose sum is σ = 135326235216. Its totient is φ = 135284273700.

The previous prime is 135305254369. The next prime is 135305254463. The reversal of 135305254457 is 754452503531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754452503531 = 4019 ⋅187721449.

It is a cyclic number.

It is not a de Polignac number, because 135305254457 - 2¹² = 135305250361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135305254057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10480703 + ... + 10493604.

It is an arithmetic number, because the mean of its divisors is an integer number (33831558804).

Almost surely, 2^135305254457 is an apocalyptic number.

It is an amenable number.

135305254457 is a deficient number, since it is larger than the sum of its proper divisors (20980759).

135305254457 is an equidigital number, since it uses as much as digits as its factorization.

135305254457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20980758.

The product of its (nonzero) digits is 1260000, while the sum is 44.

Adding to 135305254457 its reverse (754452503531), we get a palindrome (889757757988).

The spelling of 135305254457 in words is "one hundred thirty-five billion, three hundred five million, two hundred fifty-four thousand, four hundred fifty-seven".