208281534129 has 12 divisors (see below), whose sum is σ = 300862173300. Its totient is φ = 138849247584.

The previous prime is 208281534077. The next prime is 208281534199. The reversal of 208281534129 is 921435182802.

208281534129 is a `hidden beast` number, since 2 + 0 + 8 + 281 + 5 + 341 + 29 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 468635904 + 207812898225 = 21648^2 + 455865^2 .

It is not a de Polignac number, because 208281534129 - 2³⁷ = 70842580657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208281534199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158674 + ... + 664635.

It is an arithmetic number, because the mean of its divisors is an integer number (25071847775).

Almost surely, 2^208281534129 is an apocalyptic number.

It is an amenable number.

208281534129 is a deficient number, since it is larger than the sum of its proper divisors (92580639171).

208281534129 is a wasteful number, since it uses less digits than its factorization.

208281534129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851424 (or 851421 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 208281534129 in words is "two hundred eight billion, two hundred eighty-one million, five hundred thirty-four thousand, one hundred twenty-nine".