208104502992679 has 2 divisors, whose sum is σ = 208104502992680. Its totient is φ = 208104502992678.

The previous prime is 208104502992649. The next prime is 208104502992691. The reversal of 208104502992679 is 976299205401802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208104502992679 - 2³³ = 208095913058087 is a prime.

It is a super-4 number, since 4×208104502992679⁴ (a number of 58 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208104502992679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208104502992649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104052251496339 + 104052251496340.

It is an arithmetic number, because the mean of its divisors is an integer number (104052251496340).

Almost surely, 2^{208104502992679} is an apocalyptic number.

208104502992679 is a deficient number, since it is larger than the sum of its proper divisors (1).

208104502992679 is an equidigital number, since it uses as much as digits as its factorization.

208104502992679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 208104502992679 in words is "two hundred eight trillion, one hundred four billion, five hundred two million, nine hundred ninety-two thousand, six hundred seventy-nine".