63355498813 has 4 divisors (see below), whose sum is σ = 63759037180. Its totient is φ = 62951960448.

The previous prime is 63355498751. The next prime is 63355498819. The reversal of 63355498813 is 31889455336.

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 10173143044 + 53182355769 = 100862^2 + 230613^2 .

It is a cyclic number.

It is not a de Polignac number, because 63355498813 - 2⁹ = 63355498301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63355498819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201768948 + ... + 201769261.

It is an arithmetic number, because the mean of its divisors is an integer number (15939759295).

Almost surely, 2^63355498813 is an apocalyptic number.

It is an amenable number.

63355498813 is a deficient number, since it is larger than the sum of its proper divisors (403538367).

63355498813 is a wasteful number, since it uses less digits than its factorization.

63355498813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403538366.

The product of its digits is 9331200, while the sum is 55.

The spelling of 63355498813 in words is "sixty-three billion, three hundred fifty-five million, four hundred ninety-eight thousand, eight hundred thirteen".