135959757817 has 8 divisors (see below), whose sum is σ = 146634485256. Its totient is φ = 125315928192.

The previous prime is 135959757757. The next prime is 135959757827. The reversal of 135959757817 is 718757959531.

It can be written as a sum of positive squares in 4 ways, for example, as 72384673936 + 63575083881 = 269044^2 + 252141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-135959757817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135959757827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7715308 + ... + 7732909.

It is an arithmetic number, because the mean of its divisors is an integer number (18329310657).

Almost surely, 2^135959757817 is an apocalyptic number.

It is an amenable number.

135959757817 is a deficient number, since it is larger than the sum of its proper divisors (10674727439).

135959757817 is a wasteful number, since it uses less digits than its factorization.

135959757817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15448907.

The product of its digits is 83349000, while the sum is 67.

The spelling of 135959757817 in words is "one hundred thirty-five billion, nine hundred fifty-nine million, seven hundred fifty-seven thousand, eight hundred seventeen".