20782694353 has 2 divisors, whose sum is σ = 20782694354. Its totient is φ = 20782694352.

The previous prime is 20782694341. The next prime is 20782694431. The reversal of 20782694353 is 35349628702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20616077889 + 166616464 = 143583^2 + 12908^2 .

It is a cyclic number.

It is not a de Polignac number, because 20782694353 - 2⁵ = 20782694321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20782694297 and 20782694306.

It is not a weakly prime, because it can be changed into another prime (20782694333) 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, 10391347176 + 10391347177.

It is an arithmetic number, because the mean of its divisors is an integer number (10391347177).

Almost surely, 2^20782694353 is an apocalyptic number.

It is an amenable number.

20782694353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20782694353 is an equidigital number, since it uses as much as digits as its factorization.

20782694353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 20782694353 in words is "twenty billion, seven hundred eighty-two million, six hundred ninety-four thousand, three hundred fifty-three".