63810327481 has 2 divisors, whose sum is σ = 63810327482. Its totient is φ = 63810327480.

The previous prime is 63810327437. The next prime is 63810327517. The reversal of 63810327481 is 18472301836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59348755456 + 4461572025 = 243616^2 + 66795^2 .

It is a cyclic number.

It is not a de Polignac number, because 63810327481 - 2⁹ = 63810326969 is a prime.

It is a super-2 number, since 2×63810327481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63810327431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31905163740 + 31905163741.

It is an arithmetic number, because the mean of its divisors is an integer number (31905163741).

Almost surely, 2^63810327481 is an apocalyptic number.

It is an amenable number.

63810327481 is a deficient number, since it is larger than the sum of its proper divisors (1).

63810327481 is an equidigital number, since it uses as much as digits as its factorization.

63810327481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 63810327481 in words is "sixty-three billion, eight hundred ten million, three hundred twenty-seven thousand, four hundred eighty-one".