63335386561 has 2 divisors, whose sum is σ = 63335386562. Its totient is φ = 63335386560.

The previous prime is 63335386553. The next prime is 63335386579. The reversal of 63335386561 is 16568353336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45548096400 + 17787290161 = 213420^2 + 133369^2 .

It is a cyclic number.

It is not a de Polignac number, because 63335386561 - 2³ = 63335386553 is a prime.

It is a super-2 number, since 2×63335386561² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63335386661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31667693280 + 31667693281.

It is an arithmetic number, because the mean of its divisors is an integer number (31667693281).

Almost surely, 2^63335386561 is an apocalyptic number.

It is an amenable number.

63335386561 is a deficient number, since it is larger than the sum of its proper divisors (1).

63335386561 is an equidigital number, since it uses as much as digits as its factorization.

63335386561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 49.

The spelling of 63335386561 in words is "sixty-three billion, three hundred thirty-five million, three hundred eighty-six thousand, five hundred sixty-one".