63963465065 has 4 divisors (see below), whose sum is σ = 76756158084. Its totient is φ = 51170772048.

The previous prime is 63963465053. The next prime is 63963465089. The reversal of 63963465065 is 56056436936.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33315010576 + 30648454489 = 182524^2 + 175067^2 .

It is a cyclic number.

It is not a de Polignac number, because 63963465065 - 2⁸ = 63963464809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63963464998 and 63963465016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396346502 + ... + 6396346511.

It is an arithmetic number, because the mean of its divisors is an integer number (19189039521).

Almost surely, 2^63963465065 is an apocalyptic number.

It is an amenable number.

63963465065 is a deficient number, since it is larger than the sum of its proper divisors (12792693019).

63963465065 is a wasteful number, since it uses less digits than its factorization.

63963465065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12792693018.

The product of its (nonzero) digits is 10497600, while the sum is 53.

The spelling of 63963465065 in words is "sixty-three billion, nine hundred sixty-three million, four hundred sixty-five thousand, sixty-five".