63531586241 has 4 divisors (see below), whose sum is σ = 63533798484. Its totient is φ = 63529374000.

The previous prime is 63531586231. The next prime is 63531586289. The reversal of 63531586241 is 14268513536.

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 1171008400 + 62360577841 = 34220^2 + 249721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63531586241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63531586192 and 63531586201.

It is not an unprimeable number, because it can be changed into a prime (63531586231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062470 + ... + 1120671.

It is an arithmetic number, because the mean of its divisors is an integer number (15883449621).

Almost surely, 2^63531586241 is an apocalyptic number.

It is an amenable number.

63531586241 is a deficient number, since it is larger than the sum of its proper divisors (2212243).

63531586241 is a wasteful number, since it uses less digits than its factorization.

63531586241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212242.

The product of its digits is 518400, while the sum is 44.

The spelling of 63531586241 in words is "sixty-three billion, five hundred thirty-one million, five hundred eighty-six thousand, two hundred forty-one".