63823481881613 has 2 divisors, whose sum is σ = 63823481881614. Its totient is φ = 63823481881612.

The previous prime is 63823481881597. The next prime is 63823481881637. The reversal of 63823481881613 is 31618818432836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57925296491689 + 5898185389924 = 7610867^2 + 2428618^2 .

It is a cyclic number.

It is not a de Polignac number, because 63823481881613 - 2⁴ = 63823481881597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63823481883613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31911740940806 + 31911740940807.

It is an arithmetic number, because the mean of its divisors is an integer number (31911740940807).

Almost surely, 2^{63823481881613} is an apocalyptic number.

It is an amenable number.

63823481881613 is a deficient number, since it is larger than the sum of its proper divisors (1).

63823481881613 is an equidigital number, since it uses as much as digits as its factorization.

63823481881613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31850496, while the sum is 62.

The spelling of 63823481881613 in words is "sixty-three trillion, eight hundred twenty-three billion, four hundred eighty-one million, eight hundred eighty-one thousand, six hundred thirteen".