208932485135 has 24 divisors (see below), whose sum is σ = 282619255248. Its totient is φ = 147049219200.

The previous prime is 208932485123. The next prime is 208932485143. The reversal of 208932485135 is 531584239802.

It is a happy number.

It is not a de Polignac number, because 208932485135 - 2⁸ = 208932484879 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 23 ways as a sum of consecutive naturals, for example, 1923614 + ... + 2029323.

It is an arithmetic number, because the mean of its divisors is an integer number (11775802302).

Almost surely, 2^208932485135 is an apocalyptic number.

208932485135 is a deficient number, since it is larger than the sum of its proper divisors (73686770113).

208932485135 is a wasteful number, since it uses less digits than its factorization.

208932485135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953015 (or 3952984 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 208932485135 in words is "two hundred eight billion, nine hundred thirty-two million, four hundred eighty-five thousand, one hundred thirty-five".