206660703912937 has 2 divisors, whose sum is σ = 206660703912938. Its totient is φ = 206660703912936.

The previous prime is 206660703912931. The next prime is 206660703912973. The reversal of 206660703912937 is 739219307066602.

Together with next prime (206660703912973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165707666817001 + 40953037095936 = 12872749^2 + 6399456^2 .

It is a cyclic number.

It is not a de Polignac number, because 206660703912937 - 2⁷ = 206660703912809 is a prime.

It is a super-2 number, since 2×206660703912937² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206660703912931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103330351956468 + 103330351956469.

It is an arithmetic number, because the mean of its divisors is an integer number (103330351956469).

Almost surely, 2^{206660703912937} is an apocalyptic number.

It is an amenable number.

206660703912937 is a deficient number, since it is larger than the sum of its proper divisors (1).

206660703912937 is an equidigital number, since it uses as much as digits as its factorization.

206660703912937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 61.

The spelling of 206660703912937 in words is "two hundred six trillion, six hundred sixty billion, seven hundred three million, nine hundred twelve thousand, nine hundred thirty-seven".