63965696593 has 2 divisors, whose sum is σ = 63965696594. Its totient is φ = 63965696592.

The previous prime is 63965696551. The next prime is 63965696657. The reversal of 63965696593 is 39569656936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45825108624 + 18140587969 = 214068^2 + 134687^2 .

It is a cyclic number.

It is not a de Polignac number, because 63965696593 - 2²⁵ = 63932142161 is a prime.

It is a super-2 number, since 2×63965696593² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63965696503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31982848296 + 31982848297.

It is an arithmetic number, because the mean of its divisors is an integer number (31982848297).

Almost surely, 2^63965696593 is an apocalyptic number.

It is an amenable number.

63965696593 is a deficient number, since it is larger than the sum of its proper divisors (1).

63965696593 is an equidigital number, since it uses as much as digits as its factorization.

63965696593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 212576400, while the sum is 67.

The spelling of 63965696593 in words is "sixty-three billion, nine hundred sixty-five million, six hundred ninety-six thousand, five hundred ninety-three".