63432616657 has 2 divisors, whose sum is σ = 63432616658. Its totient is φ = 63432616656.

The previous prime is 63432616571. The next prime is 63432616669. The reversal of 63432616657 is 75661623436.

63432616657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61125639696 + 2306976961 = 247236^2 + 48031^2 .

It is a cyclic number.

It is not a de Polignac number, because 63432616657 - 2⁷ = 63432616529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63432616657.

It is not a weakly prime, because it can be changed into another prime (63432626657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31716308328 + 31716308329.

It is an arithmetic number, because the mean of its divisors is an integer number (31716308329).

Almost surely, 2^63432616657 is an apocalyptic number.

It is an amenable number.

63432616657 is a deficient number, since it is larger than the sum of its proper divisors (1).

63432616657 is an equidigital number, since it uses as much as digits as its factorization.

63432616657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 49.

The spelling of 63432616657 in words is "sixty-three billion, four hundred thirty-two million, six hundred sixteen thousand, six hundred fifty-seven".