19863101894411 has 2 divisors, whose sum is σ = 19863101894412. Its totient is φ = 19863101894410.

The previous prime is 19863101894399. The next prime is 19863101894429. The reversal of 19863101894411 is 11449810136891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19863101894411 is a prime.

It is not a weakly prime, because it can be changed into another prime (19863101894611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9931550947205 + 9931550947206.

It is an arithmetic number, because the mean of its divisors is an integer number (9931550947206).

Almost surely, 2^{19863101894411} is an apocalyptic number.

19863101894411 is a deficient number, since it is larger than the sum of its proper divisors (1).

19863101894411 is an equidigital number, since it uses as much as digits as its factorization.

19863101894411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 56.

The spelling of 19863101894411 in words is "nineteen trillion, eight hundred sixty-three billion, one hundred one million, eight hundred ninety-four thousand, four hundred eleven".