20259798443 has 2 divisors, whose sum is σ = 20259798444. Its totient is φ = 20259798442.

The previous prime is 20259798421. The next prime is 20259798463. The reversal of 20259798443 is 34489795202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20259798443 - 2¹⁰ = 20259797419 is a prime.

It is not a weakly prime, because it can be changed into another prime (20259798463) 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, 10129899221 + 10129899222.

It is an arithmetic number, because the mean of its divisors is an integer number (10129899222).

Almost surely, 2^20259798443 is an apocalyptic number.

20259798443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20259798443 is an equidigital number, since it uses as much as digits as its factorization.

20259798443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 20259798443 in words is "twenty billion, two hundred fifty-nine million, seven hundred ninety-eight thousand, four hundred forty-three".