135548663857 has 4 divisors (see below), whose sum is σ = 142682804080. Its totient is φ = 128414523636.

The previous prime is 135548663851. The next prime is 135548663867. The reversal of 135548663857 is 758366845531.

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.

It is a cyclic number.

It is not a de Polignac number, because 135548663857 - 2³ = 135548663849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135548663795 and 135548663804.

It is not an unprimeable number, because it can be changed into a prime (135548663851) 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, 3567070083 + ... + 3567070120.

It is an arithmetic number, because the mean of its divisors is an integer number (35670701020).

Almost surely, 2^135548663857 is an apocalyptic number.

It is an amenable number.

135548663857 is a deficient number, since it is larger than the sum of its proper divisors (7134140223).

135548663857 is an equidigital number, since it uses as much as digits as its factorization.

135548663857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134140222.

The product of its digits is 72576000, while the sum is 61.

The spelling of 135548663857 in words is "one hundred thirty-five billion, five hundred forty-eight million, six hundred sixty-three thousand, eight hundred fifty-seven".