208537980903 has 12 divisors (see below), whose sum is σ = 344253174928. Its totient is φ = 119164560480.

The previous prime is 208537980869. The next prime is 208537980947. The reversal of 208537980903 is 309089735802.

It is a happy number.

208537980903 is a `hidden beast` number, since 20 + 8 + 537 + 9 + 80 + 9 + 0 + 3 = 666.

It is not a de Polignac number, because 208537980903 - 2¹² = 208537976807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208537980903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208537980953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655063278 + ... + 1655063403.

Almost surely, 2^208537980903 is an apocalyptic number.

208537980903 is a deficient number, since it is larger than the sum of its proper divisors (135715194025).

208537980903 is a wasteful number, since it uses less digits than its factorization.

208537980903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310126694 (or 3310126691 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 208537980903 in words is "two hundred eight billion, five hundred thirty-seven million, nine hundred eighty thousand, nine hundred three".