208665093803 has 2 divisors, whose sum is σ = 208665093804. Its totient is φ = 208665093802.

The previous prime is 208665093781. The next prime is 208665093817. The reversal of 208665093803 is 308390566802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208665093803 - 2⁶ = 208665093739 is a prime.

It is a super-2 number, since 2×208665093803² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (208665093883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104332546901 + 104332546902.

It is an arithmetic number, because the mean of its divisors is an integer number (104332546902).

Almost surely, 2^208665093803 is an apocalyptic number.

208665093803 is a deficient number, since it is larger than the sum of its proper divisors (1).

208665093803 is an equidigital number, since it uses as much as digits as its factorization.

208665093803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 208665093803 in words is "two hundred eight billion, six hundred sixty-five million, ninety-three thousand, eight hundred three".