63449856437771 has 2 divisors, whose sum is σ = 63449856437772. Its totient is φ = 63449856437770.

The previous prime is 63449856437741. The next prime is 63449856437837. The reversal of 63449856437771 is 17773465894436.

63449856437771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63449856437771 - 2⁶ = 63449856437707 is a prime.

It is not a weakly prime, because it can be changed into another prime (63449856437741) 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, 31724928218885 + 31724928218886.

It is an arithmetic number, because the mean of its divisors is an integer number (31724928218886).

Almost surely, 2^{63449856437771} is an apocalyptic number.

63449856437771 is a deficient number, since it is larger than the sum of its proper divisors (1).

63449856437771 is an equidigital number, since it uses as much as digits as its factorization.

63449856437771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560481280, while the sum is 74.

The spelling of 63449856437771 in words is "sixty-three trillion, four hundred forty-nine billion, eight hundred fifty-six million, four hundred thirty-seven thousand, seven hundred seventy-one".