63543577660993 has 2 divisors, whose sum is σ = 63543577660994. Its totient is φ = 63543577660992.

The previous prime is 63543577660951. The next prime is 63543577661129. The reversal of 63543577660993 is 39906677534536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49618612226304 + 13924965434689 = 7044048^2 + 3731617^2 .

It is a cyclic number.

It is not a de Polignac number, because 63543577660993 - 2²⁵ = 63543544106561 is a prime.

It is not a weakly prime, because it can be changed into another prime (63543577630993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31771788830496 + 31771788830497.

It is an arithmetic number, because the mean of its divisors is an integer number (31771788830497).

Almost surely, 2^{63543577660993} is an apocalyptic number.

It is an amenable number.

63543577660993 is a deficient number, since it is larger than the sum of its proper divisors (1).

63543577660993 is an equidigital number, since it uses as much as digits as its factorization.

63543577660993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2314720800, while the sum is 73.

The spelling of 63543577660993 in words is "sixty-three trillion, five hundred forty-three billion, five hundred seventy-seven million, six hundred sixty thousand, nine hundred ninety-three".