63108916657 has 2 divisors, whose sum is σ = 63108916658. Its totient is φ = 63108916656.

The previous prime is 63108916649. The next prime is 63108916669. The reversal of 63108916657 is 75661980136.

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., 62908665856 + 200250801 = 250816^2 + 14151^2 .

It is a cyclic number.

It is not a de Polignac number, because 63108916657 - 2³ = 63108916649 is a prime.

It is not a weakly prime, because it can be changed into another prime (63108916627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31554458328 + 31554458329.

It is an arithmetic number, because the mean of its divisors is an integer number (31554458329).

Almost surely, 2^63108916657 is an apocalyptic number.

It is an amenable number.

63108916657 is a deficient number, since it is larger than the sum of its proper divisors (1).

63108916657 is an equidigital number, since it uses as much as digits as its factorization.

63108916657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

It can be divided in two parts, 631089 and 16657, that added together give a palindrome (647746).

The spelling of 63108916657 in words is "sixty-three billion, one hundred eight million, nine hundred sixteen thousand, six hundred fifty-seven".