206104155710801 has 2 divisors, whose sum is σ = 206104155710802. Its totient is φ = 206104155710800.

The previous prime is 206104155710683. The next prime is 206104155710809. The reversal of 206104155710801 is 108017551401602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202602201145600 + 3501954565201 = 14233840^2 + 1871351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206104155710801 is a prime.

It is not a weakly prime, because it can be changed into another prime (206104155710809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103052077855400 + 103052077855401.

It is an arithmetic number, because the mean of its divisors is an integer number (103052077855401).

Almost surely, 2^{206104155710801} is an apocalyptic number.

It is an amenable number.

206104155710801 is a deficient number, since it is larger than the sum of its proper divisors (1).

206104155710801 is an equidigital number, since it uses as much as digits as its factorization.

206104155710801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 41.

The spelling of 206104155710801 in words is "two hundred six trillion, one hundred four billion, one hundred fifty-five million, seven hundred ten thousand, eight hundred one".