20355124420283 has 2 divisors, whose sum is σ = 20355124420284. Its totient is φ = 20355124420282.

The previous prime is 20355124420277. The next prime is 20355124420327. The reversal of 20355124420283 is 38202442155302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20355124420283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20355124420283.

It is not a weakly prime, because it can be changed into another prime (20355124420223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177562210141 + 10177562210142.

It is an arithmetic number, because the mean of its divisors is an integer number (10177562210142).

Almost surely, 2^{20355124420283} is an apocalyptic number.

20355124420283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355124420283 is an equidigital number, since it uses as much as digits as its factorization.

20355124420283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 20355124420283 its reverse (38202442155302), we get a palindrome (58557566575585).

The spelling of 20355124420283 in words is "twenty trillion, three hundred fifty-five billion, one hundred twenty-four million, four hundred twenty thousand, two hundred eighty-three".