63771245513 has 2 divisors, whose sum is σ = 63771245514. Its totient is φ = 63771245512.

The previous prime is 63771245477. The next prime is 63771245533. The reversal of 63771245513 is 31554217736.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42335943049 + 21435302464 = 205757^2 + 146408^2 .

It is a cyclic number.

It is not a de Polignac number, because 63771245513 - 2⁶ = 63771245449 is a prime.

It is not a weakly prime, because it can be changed into another prime (63771245533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31885622756 + 31885622757.

It is an arithmetic number, because the mean of its divisors is an integer number (31885622757).

Almost surely, 2^63771245513 is an apocalyptic number.

It is an amenable number.

63771245513 is a deficient number, since it is larger than the sum of its proper divisors (1).

63771245513 is an equidigital number, since it uses as much as digits as its factorization.

63771245513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 44.

The spelling of 63771245513 in words is "sixty-three billion, seven hundred seventy-one million, two hundred forty-five thousand, five hundred thirteen".