208901032085 has 16 divisors (see below), whose sum is σ = 274579858800. Its totient is φ = 151866387456.

The previous prime is 208901032079. The next prime is 208901032103. The reversal of 208901032085 is 580230109802.

It can be written as a sum of positive squares in 8 ways, for example, as 1483636324 + 207417395761 = 38518^2 + 455431^2 .

It is a cyclic number.

It is not a de Polignac number, because 208901032085 - 2²² = 208896837781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42370970 + ... + 42375899.

It is an arithmetic number, because the mean of its divisors is an integer number (17161241175).

Almost surely, 2^208901032085 is an apocalyptic number.

It is an amenable number.

208901032085 is a deficient number, since it is larger than the sum of its proper divisors (65678826715).

208901032085 is a wasteful number, since it uses less digits than its factorization.

208901032085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84746920.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 208901032085 in words is "two hundred eight billion, nine hundred one million, thirty-two thousand, eighty-five".