19968950803 has 2 divisors, whose sum is σ = 19968950804. Its totient is φ = 19968950802.

The previous prime is 19968950779. The next prime is 19968950831. The reversal of 19968950803 is 30805986991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19968950803 - 2³³ = 11379016211 is a prime.

It is not a weakly prime, because it can be changed into another prime (19968950843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9984475401 + 9984475402.

It is an arithmetic number, because the mean of its divisors is an integer number (9984475402).

Almost surely, 2^19968950803 is an apocalyptic number.

19968950803 is a deficient number, since it is larger than the sum of its proper divisors (1).

19968950803 is an equidigital number, since it uses as much as digits as its factorization.

19968950803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 58.

The spelling of 19968950803 in words is "nineteen billion, nine hundred sixty-eight million, nine hundred fifty thousand, eight hundred three".