63803287553 has 2 divisors, whose sum is σ = 63803287554. Its totient is φ = 63803287552.

The previous prime is 63803287451. The next prime is 63803287601. The reversal of 63803287553 is 35578230836.

63803287553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63508032064 + 295255489 = 252008^2 + 17183^2 .

It is a cyclic number.

It is not a de Polignac number, because 63803287553 - 2¹⁰ = 63803286529 is a prime.

It is not a weakly prime, because it can be changed into another prime (63803280553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31901643776 + 31901643777.

It is an arithmetic number, because the mean of its divisors is an integer number (31901643777).

Almost surely, 2^63803287553 is an apocalyptic number.

It is an amenable number.

63803287553 is a deficient number, since it is larger than the sum of its proper divisors (1).

63803287553 is an equidigital number, since it uses as much as digits as its factorization.

63803287553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 63803287553 in words is "sixty-three billion, eight hundred three million, two hundred eighty-seven thousand, five hundred fifty-three".