20173749983 has 2 divisors, whose sum is σ = 20173749984. Its totient is φ = 20173749982.

The previous prime is 20173749929. The next prime is 20173750027. The reversal of 20173749983 is 38994737102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20173749983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20173745983) 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, 10086874991 + 10086874992.

It is an arithmetic number, because the mean of its divisors is an integer number (10086874992).

Almost surely, 2^20173749983 is an apocalyptic number.

20173749983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173749983 is an equidigital number, since it uses as much as digits as its factorization.

20173749983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 20173749983 in words is "twenty billion, one hundred seventy-three million, seven hundred forty-nine thousand, nine hundred eighty-three".