63277673321081 has 2 divisors, whose sum is σ = 63277673321082. Its totient is φ = 63277673321080.

The previous prime is 63277673321077. The next prime is 63277673321111. The reversal of 63277673321081 is 18012337677236.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58752761551225 + 4524911769856 = 7665035^2 + 2127184^2 .

It is a cyclic number.

It is not a de Polignac number, because 63277673321081 - 2² = 63277673321077 is a prime.

It is a super-2 number, since 2×63277673321081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63277673329081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31638836660540 + 31638836660541.

It is an arithmetic number, because the mean of its divisors is an integer number (31638836660541).

Almost surely, 2^{63277673321081} is an apocalyptic number.

It is an amenable number.

63277673321081 is a deficient number, since it is larger than the sum of its proper divisors (1).

63277673321081 is an equidigital number, since it uses as much as digits as its factorization.

63277673321081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 63277673321081 in words is "sixty-three trillion, two hundred seventy-seven billion, six hundred seventy-three million, three hundred twenty-one thousand, eighty-one".