20246042017 has 2 divisors, whose sum is σ = 20246042018. Its totient is φ = 20246042016.

The previous prime is 20246041979. The next prime is 20246042053. The reversal of 20246042017 is 71024064202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13782525201 + 6463516816 = 117399^2 + 80396^2 .

It is a cyclic number.

It is not a de Polignac number, because 20246042017 - 2⁷ = 20246041889 is a prime.

It is not a weakly prime, because it can be changed into another prime (20246049017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10123021008 + 10123021009.

It is an arithmetic number, because the mean of its divisors is an integer number (10123021009).

Almost surely, 2^20246042017 is an apocalyptic number.

It is an amenable number.

20246042017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20246042017 is an equidigital number, since it uses as much as digits as its factorization.

20246042017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 20246042017 in words is "twenty billion, two hundred forty-six million, forty-two thousand, seventeen".