63439000613 has 2 divisors, whose sum is σ = 63439000614. Its totient is φ = 63439000612.

The previous prime is 63439000607. The next prime is 63439000631. The reversal of 63439000613 is 31600093436.

Together with next prime (63439000631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44511294529 + 18927706084 = 210977^2 + 137578^2 .

It is a cyclic number.

It is not a de Polignac number, because 63439000613 - 2⁶ = 63439000549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63439000643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31719500306 + 31719500307.

It is an arithmetic number, because the mean of its divisors is an integer number (31719500307).

Almost surely, 2^63439000613 is an apocalyptic number.

It is an amenable number.

63439000613 is a deficient number, since it is larger than the sum of its proper divisors (1).

63439000613 is an equidigital number, since it uses as much as digits as its factorization.

63439000613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 63439000613 in words is "sixty-three billion, four hundred thirty-nine million, six hundred thirteen", and thus it is an aban number.