20206444493 has 2 divisors, whose sum is σ = 20206444494. Its totient is φ = 20206444492.

The previous prime is 20206444483. The next prime is 20206444499. The reversal of 20206444493 is 39444460202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18631704004 + 1574740489 = 136498^2 + 39683^2 .

It is a cyclic number.

It is not a de Polignac number, because 20206444493 - 2¹⁶ = 20206378957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20206444499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103222246 + 10103222247.

It is an arithmetic number, because the mean of its divisors is an integer number (10103222247).

Almost surely, 2^20206444493 is an apocalyptic number.

It is an amenable number.

20206444493 is a deficient number, since it is larger than the sum of its proper divisors (1).

20206444493 is an equidigital number, since it uses as much as digits as its factorization.

20206444493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 20206444493 in words is "twenty billion, two hundred six million, four hundred forty-four thousand, four hundred ninety-three".