19961283203 has 2 divisors, whose sum is σ = 19961283204. Its totient is φ = 19961283202.

The previous prime is 19961283197. The next prime is 19961283229. The reversal of 19961283203 is 30238216991.

It is a weak prime.

It is an emirp because it is prime and its reverse (30238216991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19961283203 is a prime.

It is a super-2 number, since 2×19961283203² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19961283403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9980641601 + 9980641602.

It is an arithmetic number, because the mean of its divisors is an integer number (9980641602).

Almost surely, 2^19961283203 is an apocalyptic number.

19961283203 is a deficient number, since it is larger than the sum of its proper divisors (1).

19961283203 is an equidigital number, since it uses as much as digits as its factorization.

19961283203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 19961283203 in words is "nineteen billion, nine hundred sixty-one million, two hundred eighty-three thousand, two hundred three".