208701980623 has 4 divisors (see below), whose sum is σ = 208846212880. Its totient is φ = 208557748368.

The previous prime is 208701980621. The next prime is 208701980633. The reversal of 208701980623 is 326089107802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208701980623 - 2¹ = 208701980621 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 (208701980621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72113958 + ... + 72116851.

It is an arithmetic number, because the mean of its divisors is an integer number (52211553220).

Almost surely, 2^208701980623 is an apocalyptic number.

208701980623 is a deficient number, since it is larger than the sum of its proper divisors (144232257).

208701980623 is a wasteful number, since it uses less digits than its factorization.

208701980623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144232256.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 208701980623 in words is "two hundred eight billion, seven hundred one million, nine hundred eighty thousand, six hundred twenty-three".