63834796657 has 2 divisors, whose sum is σ = 63834796658. Its totient is φ = 63834796656.

The previous prime is 63834796609. The next prime is 63834796673. The reversal of 63834796657 is 75669743836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57819087936 + 6015708721 = 240456^2 + 77561^2 .

It is a cyclic number.

It is not a de Polignac number, because 63834796657 - 2²³ = 63826408049 is a prime.

It is not a weakly prime, because it can be changed into another prime (63834796757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31917398328 + 31917398329.

It is an arithmetic number, because the mean of its divisors is an integer number (31917398329).

Almost surely, 2^63834796657 is an apocalyptic number.

It is an amenable number.

63834796657 is a deficient number, since it is larger than the sum of its proper divisors (1).

63834796657 is an equidigital number, since it uses as much as digits as its factorization.

63834796657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 64.

The spelling of 63834796657 in words is "sixty-three billion, eight hundred thirty-four million, seven hundred ninety-six thousand, six hundred fifty-seven".