63038742821 has 2 divisors, whose sum is σ = 63038742822. Its totient is φ = 63038742820.

The previous prime is 63038742817. The next prime is 63038742829. The reversal of 63038742821 is 12824783036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62028393025 + 1010349796 = 249055^2 + 31786^2 .

It is a cyclic number.

It is not a de Polignac number, because 63038742821 - 2² = 63038742817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63038742829) 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, 31519371410 + 31519371411.

It is an arithmetic number, because the mean of its divisors is an integer number (31519371411).

Almost surely, 2^63038742821 is an apocalyptic number.

It is an amenable number.

63038742821 is a deficient number, since it is larger than the sum of its proper divisors (1).

63038742821 is an equidigital number, since it uses as much as digits as its factorization.

63038742821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 63038742821 in words is "sixty-three billion, thirty-eight million, seven hundred forty-two thousand, eight hundred twenty-one".