214106636240561 has 2 divisors, whose sum is σ = 214106636240562. Its totient is φ = 214106636240560.

The previous prime is 214106636240507. The next prime is 214106636240573. The reversal of 214106636240561 is 165042636601412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113249929191025 + 100856707049536 = 10641895^2 + 10042744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214106636240561 is a prime.

It is not a weakly prime, because it can be changed into another prime (214106636230561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107053318120280 + 107053318120281.

It is an arithmetic number, because the mean of its divisors is an integer number (107053318120281).

Almost surely, 2^{214106636240561} is an apocalyptic number.

It is an amenable number.

214106636240561 is a deficient number, since it is larger than the sum of its proper divisors (1).

214106636240561 is an equidigital number, since it uses as much as digits as its factorization.

214106636240561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 214106636240561 in words is "two hundred fourteen trillion, one hundred six billion, six hundred thirty-six million, two hundred forty thousand, five hundred sixty-one".