20329987283 has 2 divisors, whose sum is σ = 20329987284. Its totient is φ = 20329987282.

The previous prime is 20329987253. The next prime is 20329987297. The reversal of 20329987283 is 38278992302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20329987283 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20329987253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10164993641 + 10164993642.

It is an arithmetic number, because the mean of its divisors is an integer number (10164993642).

Almost surely, 2^20329987283 is an apocalyptic number.

20329987283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20329987283 is an equidigital number, since it uses as much as digits as its factorization.

20329987283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 20329987283 in words is "twenty billion, three hundred twenty-nine million, nine hundred eighty-seven thousand, two hundred eighty-three".