20426190073 has 2 divisors, whose sum is σ = 20426190074. Its totient is φ = 20426190072.

The previous prime is 20426189999. The next prime is 20426190097. The reversal of 20426190073 is 37009162402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19641461904 + 784728169 = 140148^2 + 28013^2 .

It is a cyclic number.

It is not a de Polignac number, because 20426190073 - 2⁹ = 20426189561 is a prime.

It is not a weakly prime, because it can be changed into another prime (20426190973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213095036 + 10213095037.

It is an arithmetic number, because the mean of its divisors is an integer number (10213095037).

Almost surely, 2^20426190073 is an apocalyptic number.

It is an amenable number.

20426190073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426190073 is an equidigital number, since it uses as much as digits as its factorization.

20426190073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 20426190073 in words is "twenty billion, four hundred twenty-six million, one hundred ninety thousand, seventy-three".