201247578856273 has 2 divisors, whose sum is σ = 201247578856274. Its totient is φ = 201247578856272.

The previous prime is 201247578856139. The next prime is 201247578856307. The reversal of 201247578856273 is 372658875742102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156848371783744 + 44399207072529 = 12523912^2 + 6663273^2 .

It is a cyclic number.

It is not a de Polignac number, because 201247578856273 - 2³⁷ = 201110139902801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201247578856199 and 201247578856208.

It is not a weakly prime, because it can be changed into another prime (201247579856273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100623789428136 + 100623789428137.

It is an arithmetic number, because the mean of its divisors is an integer number (100623789428137).

Almost surely, 2^{201247578856273} is an apocalyptic number.

It is an amenable number.

201247578856273 is a deficient number, since it is larger than the sum of its proper divisors (1).

201247578856273 is an equidigital number, since it uses as much as digits as its factorization.

201247578856273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 316108800, while the sum is 67.

The spelling of 201247578856273 in words is "two hundred one trillion, two hundred forty-seven billion, five hundred seventy-eight million, eight hundred fifty-six thousand, two hundred seventy-three".