63610575221 has 4 divisors (see below), whose sum is σ = 63638270412. Its totient is φ = 63582880032.

The previous prime is 63610575191. The next prime is 63610575253. The reversal of 63610575221 is 12257501636.

It is a happy number.

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 43193308900 + 20417266321 = 207830^2 + 142889^2 .

It is a cyclic number.

It is not a de Polignac number, because 63610575221 - 2⁶ = 63610575157 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 (63610575521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13844150 + ... + 13848743.

It is an arithmetic number, because the mean of its divisors is an integer number (15909567603).

Almost surely, 2^63610575221 is an apocalyptic number.

It is an amenable number.

63610575221 is a deficient number, since it is larger than the sum of its proper divisors (27695191).

63610575221 is a wasteful number, since it uses less digits than its factorization.

63610575221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27695190.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 63610575221 in words is "sixty-three billion, six hundred ten million, five hundred seventy-five thousand, two hundred twenty-one".