63503577313 has 6 divisors (see below), whose sum is σ = 69801452882. Its totient is φ = 57730524720.

The previous prime is 63503577281. The next prime is 63503577353. The reversal of 63503577313 is 31377530536.

63503577313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35518302369 + 27985274944 = 188463^2 + 167288^2 .

It is not a de Polignac number, because 63503577313 - 2⁵ = 63503577281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63503577313.

It is not an unprimeable number, because it can be changed into a prime (63503577353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262411356 + ... + 262411597.

Almost surely, 2^63503577313 is an apocalyptic number.

It is an amenable number.

63503577313 is a deficient number, since it is larger than the sum of its proper divisors (6297875569).

63503577313 is a wasteful number, since it uses less digits than its factorization.

63503577313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524822975 (or 524822964 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 43.

The spelling of 63503577313 in words is "sixty-three billion, five hundred three million, five hundred seventy-seven thousand, three hundred thirteen".