20206444393 has 2 divisors, whose sum is σ = 20206444394. Its totient is φ = 20206444392.

The previous prime is 20206444369. The next prime is 20206444483. The reversal of 20206444393 is 39344460202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11310747904 + 8895696489 = 106352^2 + 94317^2 .

It is a cyclic number.

It is not a de Polignac number, because 20206444393 - 2⁵ = 20206444361 is a prime.

It is a super-2 number, since 2×20206444393² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20206444303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103222196 + 10103222197.

It is an arithmetic number, because the mean of its divisors is an integer number (10103222197).

Almost surely, 2^20206444393 is an apocalyptic number.

It is an amenable number.

20206444393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20206444393 is an equidigital number, since it uses as much as digits as its factorization.

20206444393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 20206444393 in words is "twenty billion, two hundred six million, four hundred forty-four thousand, three hundred ninety-three".