19555514453 has 2 divisors, whose sum is σ = 19555514454. Its totient is φ = 19555514452.

The previous prime is 19555514399. The next prime is 19555514467. The reversal of 19555514453 is 35441555591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10399512484 + 9156001969 = 101978^2 + 95687^2 .

It is a cyclic number.

It is not a de Polignac number, because 19555514453 - 2¹⁶ = 19555448917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19555514398 and 19555514407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19555544453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9777757226 + 9777757227.

It is an arithmetic number, because the mean of its divisors is an integer number (9777757227).

Almost surely, 2^19555514453 is an apocalyptic number.

It is an amenable number.

19555514453 is a deficient number, since it is larger than the sum of its proper divisors (1).

19555514453 is an equidigital number, since it uses as much as digits as its factorization.

19555514453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350000, while the sum is 47.

The spelling of 19555514453 in words is "nineteen billion, five hundred fifty-five million, five hundred fourteen thousand, four hundred fifty-three".