135617020605 has 96 divisors (see below), whose sum is σ = 267003330048. Its totient is φ = 65490120000.

The previous prime is 135617020601. The next prime is 135617020619. The reversal of 135617020605 is 506020716531.

135617020605 is a `hidden beast` number, since 1 + 3 + 561 + 70 + 20 + 6 + 0 + 5 = 666.

It is not a de Polignac number, because 135617020605 - 2² = 135617020601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135617020605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135617020601) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3334402 + ... + 3374828.

It is an arithmetic number, because the mean of its divisors is an integer number (2781284688).

Almost surely, 2^135617020605 is an apocalyptic number.

135617020605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135617020605 is a deficient number, since it is larger than the sum of its proper divisors (131386309443).

135617020605 is a wasteful number, since it uses less digits than its factorization.

135617020605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40709 (or 40697 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 135617020605 in words is "one hundred thirty-five billion, six hundred seventeen million, twenty thousand, six hundred five".