20782305374023 has 2 divisors, whose sum is σ = 20782305374024. Its totient is φ = 20782305374022.

The previous prime is 20782305374009. The next prime is 20782305374087. The reversal of 20782305374023 is 32047350328702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20782305374023 - 2²¹ = 20782303276871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20782305374723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10391152687011 + 10391152687012.

It is an arithmetic number, because the mean of its divisors is an integer number (10391152687012).

Almost surely, 2^{20782305374023} is an apocalyptic number.

20782305374023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20782305374023 is an equidigital number, since it uses as much as digits as its factorization.

20782305374023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 20782305374023 in words is "twenty trillion, seven hundred eighty-two billion, three hundred five million, three hundred seventy-four thousand, twenty-three".