135739017217 has 8 divisors (see below), whose sum is σ = 139059101160. Its totient is φ = 132419379840.

The previous prime is 135739017209. The next prime is 135739017277. The reversal of 135739017217 is 712710937531.

It can be written as a sum of positive squares in 4 ways, for example, as 1413835201 + 134325182016 = 37601^2 + 366504^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135739017217 - 2³ = 135739017209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135739017277) 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, 551259 + ... + 758527.

It is an arithmetic number, because the mean of its divisors is an integer number (17382387645).

Almost surely, 2^135739017217 is an apocalyptic number.

It is an amenable number.

135739017217 is a deficient number, since it is larger than the sum of its proper divisors (3320083943).

135739017217 is a wasteful number, since it uses less digits than its factorization.

135739017217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223283.

The product of its (nonzero) digits is 277830, while the sum is 46.

The spelling of 135739017217 in words is "one hundred thirty-five billion, seven hundred thirty-nine million, seventeen thousand, two hundred seventeen".