63513258221 has 16 divisors (see below), whose sum is σ = 76928834304. Its totient is φ = 51189283584.

The previous prime is 63513258163. The next prime is 63513258337. The reversal of 63513258221 is 12285231536.

It is a cyclic number.

It is not a de Polignac number, because 63513258221 - 2³⁰ = 62439516397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63513258821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124550 + ... + 377543.

It is an arithmetic number, because the mean of its divisors is an integer number (4808052144).

Almost surely, 2^63513258221 is an apocalyptic number.

It is an amenable number.

63513258221 is a deficient number, since it is larger than the sum of its proper divisors (13415576083).

63513258221 is a wasteful number, since it uses less digits than its factorization.

63513258221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503180.

The product of its digits is 86400, while the sum is 38.

Adding to 63513258221 its reverse (12285231536), we get a palindrome (75798489757).

The spelling of 63513258221 in words is "sixty-three billion, five hundred thirteen million, two hundred fifty-eight thousand, two hundred twenty-one".