63438166069 has 2 divisors, whose sum is σ = 63438166070. Its totient is φ = 63438166068.

The previous prime is 63438166061. The next prime is 63438166081. The reversal of 63438166069 is 96066183436.

63438166069 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 can be written as a sum of positive squares in only one way, i.e., 49089719844 + 14348446225 = 221562^2 + 119785^2 .

It is a cyclic number.

It is not a de Polignac number, because 63438166069 - 2³ = 63438166061 is a prime.

It is a super-2 number, since 2×63438166069² (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 (63438166061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31719083034 + 31719083035.

It is an arithmetic number, because the mean of its divisors is an integer number (31719083035).

Almost surely, 2^63438166069 is an apocalyptic number.

It is an amenable number.

63438166069 is a deficient number, since it is larger than the sum of its proper divisors (1).

63438166069 is an equidigital number, since it uses as much as digits as its factorization.

63438166069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 63438166069 in words is "sixty-three billion, four hundred thirty-eight million, one hundred sixty-six thousand, sixty-nine".