206300521424681 has 2 divisors, whose sum is σ = 206300521424682. Its totient is φ = 206300521424680.

The previous prime is 206300521424651. The next prime is 206300521424743. The reversal of 206300521424681 is 186424125003602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205282270905625 + 1018250519056 = 14327675^2 + 1009084^2 .

It is a cyclic number.

It is not a de Polignac number, because 206300521424681 - 2³⁴ = 206283341555497 is a prime.

It is a super-2 number, since 2×206300521424681² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206300521424651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103150260712340 + 103150260712341.

It is an arithmetic number, because the mean of its divisors is an integer number (103150260712341).

Almost surely, 2^{206300521424681} is an apocalyptic number.

It is an amenable number.

206300521424681 is a deficient number, since it is larger than the sum of its proper divisors (1).

206300521424681 is an equidigital number, since it uses as much as digits as its factorization.

206300521424681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 206300521424681 in words is "two hundred six trillion, three hundred billion, five hundred twenty-one million, four hundred twenty-four thousand, six hundred eighty-one".