206713277387 has 2 divisors, whose sum is σ = 206713277388. Its totient is φ = 206713277386.

The previous prime is 206713277263. The next prime is 206713277411. The reversal of 206713277387 is 783772317602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206713277387 - 2²² = 206709083083 is a prime.

It is not a weakly prime, because it can be changed into another prime (206713277887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103356638693 + 103356638694.

It is an arithmetic number, because the mean of its divisors is an integer number (103356638694).

Almost surely, 2^206713277387 is an apocalyptic number.

206713277387 is a deficient number, since it is larger than the sum of its proper divisors (1).

206713277387 is an equidigital number, since it uses as much as digits as its factorization.

206713277387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4148928, while the sum is 53.

The spelling of 206713277387 in words is "two hundred six billion, seven hundred thirteen million, two hundred seventy-seven thousand, three hundred eighty-seven".