63503720213 has 4 divisors (see below), whose sum is σ = 63988481568. Its totient is φ = 63018958860.

The previous prime is 63503720191. The next prime is 63503720227. The reversal of 63503720213 is 31202730536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63503720213 - 2¹⁴ = 63503703829 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 63503720213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63503720113) 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, 242380481 + ... + 242380742.

It is an arithmetic number, because the mean of its divisors is an integer number (15997120392).

Almost surely, 2^63503720213 is an apocalyptic number.

It is an amenable number.

63503720213 is a deficient number, since it is larger than the sum of its proper divisors (484761355).

63503720213 is a wasteful number, since it uses less digits than its factorization.

63503720213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484761354.

The product of its (nonzero) digits is 22680, while the sum is 32.

The spelling of 63503720213 in words is "sixty-three billion, five hundred three million, seven hundred twenty thousand, two hundred thirteen".