63799065556 has 12 divisors (see below), whose sum is σ = 112127543892. Its totient is φ = 31762624448.

The previous prime is 63799065521. The next prime is 63799065653. The reversal of 63799065556 is 65556099736.

It can be written as a sum of positive squares in 2 ways, for example, as 24221941956 + 39577123600 = 155634^2 + 198940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63799065494 and 63799065503.

It is a congruent number.

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, 34226035 + ... + 34227898.

It is an arithmetic number, because the mean of its divisors is an integer number (9343961991).

Almost surely, 2^63799065556 is an apocalyptic number.

It is an amenable number.

63799065556 is a deficient number, since it is larger than the sum of its proper divisors (48328478336).

63799065556 is a wasteful number, since it uses less digits than its factorization.

63799065556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68454170 (or 68454168 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 61.

The spelling of 63799065556 in words is "sixty-three billion, seven hundred ninety-nine million, sixty-five thousand, five hundred fifty-six".