19854550411 has 2 divisors, whose sum is σ = 19854550412. Its totient is φ = 19854550410.

The previous prime is 19854550369. The next prime is 19854550423. The reversal of 19854550411 is 11405545891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19854550411 - 2⁷ = 19854550283 is a prime.

It is not a weakly prime, because it can be changed into another prime (19854550211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9927275205 + 9927275206.

It is an arithmetic number, because the mean of its divisors is an integer number (9927275206).

Almost surely, 2^19854550411 is an apocalyptic number.

19854550411 is a deficient number, since it is larger than the sum of its proper divisors (1).

19854550411 is an equidigital number, since it uses as much as digits as its factorization.

19854550411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 19854550411 in words is "nineteen billion, eight hundred fifty-four million, five hundred fifty thousand, four hundred eleven".