208461662243 has 2 divisors, whose sum is σ = 208461662244. Its totient is φ = 208461662242.

The previous prime is 208461662203. The next prime is 208461662251. The reversal of 208461662243 is 342266164802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208461662243 - 2¹² = 208461658147 is a prime.

It is a super-2 number, since 2×208461662243² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 208461662194 and 208461662203.

It is not a weakly prime, because it can be changed into another prime (208461662203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104230831121 + 104230831122.

It is an arithmetic number, because the mean of its divisors is an integer number (104230831122).

Almost surely, 2^208461662243 is an apocalyptic number.

208461662243 is a deficient number, since it is larger than the sum of its proper divisors (1).

208461662243 is an equidigital number, since it uses as much as digits as its factorization.

208461662243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 208461662243 in words is "two hundred eight billion, four hundred sixty-one million, six hundred sixty-two thousand, two hundred forty-three".