208541897941 has 16 divisors (see below), whose sum is σ = 232545625200. Its totient is φ = 185688050688.

The previous prime is 208541897933. The next prime is 208541897953. The reversal of 208541897941 is 149798145802.

It can be written as a sum of positive squares in 8 ways, for example, as 60243738916 + 148298159025 = 245446^2 + 385095^2 .

It is a cyclic number.

It is not a de Polignac number, because 208541897941 - 2³ = 208541897933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208541897041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144285 + ... + 661741.

It is an arithmetic number, because the mean of its divisors is an integer number (14534101575).

Almost surely, 2^208541897941 is an apocalyptic number.

It is an amenable number.

208541897941 is a deficient number, since it is larger than the sum of its proper divisors (24003727259).

208541897941 is a wasteful number, since it uses less digits than its factorization.

208541897941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518568.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 208541897941 in words is "two hundred eight billion, five hundred forty-one million, eight hundred ninety-seven thousand, nine hundred forty-one".