63539229613 has 2 divisors, whose sum is σ = 63539229614. Its totient is φ = 63539229612.

The previous prime is 63539229599. The next prime is 63539229619. The reversal of 63539229613 is 31692293536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56004642409 + 7534587204 = 236653^2 + 86802^2 .

It is a cyclic number.

It is not a de Polignac number, because 63539229613 - 2⁵ = 63539229581 is a prime.

It is a super-2 number, since 2×63539229613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63539229619) 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 as a sum of consecutive naturals, namely, 31769614806 + 31769614807.

It is an arithmetic number, because the mean of its divisors is an integer number (31769614807).

Almost surely, 2^63539229613 is an apocalyptic number.

It is an amenable number.

63539229613 is a deficient number, since it is larger than the sum of its proper divisors (1).

63539229613 is an equidigital number, since it uses as much as digits as its factorization.

63539229613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 49.

The spelling of 63539229613 in words is "sixty-three billion, five hundred thirty-nine million, two hundred twenty-nine thousand, six hundred thirteen".