206116304491 has 2 divisors, whose sum is σ = 206116304492. Its totient is φ = 206116304490.

The previous prime is 206116304479. The next prime is 206116304543. The reversal of 206116304491 is 194403611602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206116304491 - 2¹⁵ = 206116271723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206116304491.

It is not a weakly prime, because it can be changed into another prime (206116304441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103058152245 + 103058152246.

It is an arithmetic number, because the mean of its divisors is an integer number (103058152246).

Almost surely, 2^206116304491 is an apocalyptic number.

206116304491 is a deficient number, since it is larger than the sum of its proper divisors (1).

206116304491 is an equidigital number, since it uses as much as digits as its factorization.

206116304491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 206116304491 in words is "two hundred six billion, one hundred sixteen million, three hundred four thousand, four hundred ninety-one".