608208135129 has 45 divisors (see below), whose sum is σ = 1056979188837. Its totient is φ = 347519430216.

The previous prime is 608208135107. The next prime is 608208135133. The reversal of 608208135129 is 921531802806.

The square root of 608208135129 is 779877.

It is a perfect power (a square), and thus also a powerful number.

608208135129 is a `hidden beast` number, since 608 + 2 + 0 + 8 + 1 + 35 + 1 + 2 + 9 = 666.

608208135129 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 608208135129 - 2⁹ = 608208134617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (608208115129) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 49126062 + ... + 49138440.

Almost surely, 2^608208135129 is an apocalyptic number.

608208135129 is the 779877-th square number.

608208135129 is the 389939-th centered octagonal number.

It is an amenable number.

608208135129 is a deficient number, since it is larger than the sum of its proper divisors (448771053708).

608208135129 is an frugal number, since it uses more digits than its factorization.

608208135129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24784 (or 12389 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 608208135129 in words is "six hundred eight billion, two hundred eight million, one hundred thirty-five thousand, one hundred twenty-nine".