63340595694581 has 2 divisors, whose sum is σ = 63340595694582. Its totient is φ = 63340595694580.

The previous prime is 63340595694577. The next prime is 63340595694647. The reversal of 63340595694581 is 18549659504336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49943421848356 + 13397173846225 = 7067066^2 + 3660215^2 .

It is a cyclic number.

It is not a de Polignac number, because 63340595694581 - 2² = 63340595694577 is a prime.

It is a super-2 number, since 2×63340595694581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63340595694881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31670297847290 + 31670297847291.

It is an arithmetic number, because the mean of its divisors is an integer number (31670297847291).

Almost surely, 2^{63340595694581} is an apocalyptic number.

It is an amenable number.

63340595694581 is a deficient number, since it is larger than the sum of its proper divisors (1).

63340595694581 is an equidigital number, since it uses as much as digits as its factorization.

63340595694581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904000, while the sum is 68.

The spelling of 63340595694581 in words is "sixty-three trillion, three hundred forty billion, five hundred ninety-five million, six hundred ninety-four thousand, five hundred eighty-one".