206970204641 has 2 divisors, whose sum is σ = 206970204642. Its totient is φ = 206970204640.

The previous prime is 206970204631. The next prime is 206970204709. The reversal of 206970204641 is 146402079602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148761404416 + 58208800225 = 385696^2 + 241265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206970204641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (206970204601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103485102320 + 103485102321.

It is an arithmetic number, because the mean of its divisors is an integer number (103485102321).

Almost surely, 2^206970204641 is an apocalyptic number.

It is an amenable number.

206970204641 is a deficient number, since it is larger than the sum of its proper divisors (1).

206970204641 is an equidigital number, since it uses as much as digits as its factorization.

206970204641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 206970204641 in words is "two hundred six billion, nine hundred seventy million, two hundred four thousand, six hundred forty-one".