206974016651 has 2 divisors, whose sum is σ = 206974016652. Its totient is φ = 206974016650.

The previous prime is 206974016629. The next prime is 206974016657. The reversal of 206974016651 is 156610479602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206974016651 - 2¹⁰ = 206974015627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206974016596 and 206974016605.

It is not a weakly prime, because it can be changed into another prime (206974016657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103487008325 + 103487008326.

It is an arithmetic number, because the mean of its divisors is an integer number (103487008326).

Almost surely, 2^206974016651 is an apocalyptic number.

206974016651 is a deficient number, since it is larger than the sum of its proper divisors (1).

206974016651 is an equidigital number, since it uses as much as digits as its factorization.

206974016651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 206974016651 in words is "two hundred six billion, nine hundred seventy-four million, sixteen thousand, six hundred fifty-one".