20124248983871 has 2 divisors, whose sum is σ = 20124248983872. Its totient is φ = 20124248983870.

The previous prime is 20124248983841. The next prime is 20124248983939. The reversal of 20124248983871 is 17838984242102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124248983871 - 2⁶ = 20124248983807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20124248983871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124248983841) 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, 10062124491935 + 10062124491936.

It is an arithmetic number, because the mean of its divisors is an integer number (10062124491936).

Almost surely, 2^{20124248983871} is an apocalyptic number.

20124248983871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124248983871 is an equidigital number, since it uses as much as digits as its factorization.

20124248983871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12386304, while the sum is 59.

The spelling of 20124248983871 in words is "twenty trillion, one hundred twenty-four billion, two hundred forty-eight million, nine hundred eighty-three thousand, eight hundred seventy-one".