63834043213 has 2 divisors, whose sum is σ = 63834043214. Its totient is φ = 63834043212.

The previous prime is 63834043199. The next prime is 63834043237. The reversal of 63834043213 is 31234043836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33812589924 + 30021453289 = 183882^2 + 173267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63834043213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63834043243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31917021606 + 31917021607.

It is an arithmetic number, because the mean of its divisors is an integer number (31917021607).

Almost surely, 2^63834043213 is an apocalyptic number.

It is an amenable number.

63834043213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63834043213 is an equidigital number, since it uses as much as digits as its factorization.

63834043213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 63834043213 in words is "sixty-three billion, eight hundred thirty-four million, forty-three thousand, two hundred thirteen".