635434341979 has 2 divisors, whose sum is σ = 635434341980. Its totient is φ = 635434341978.

The previous prime is 635434341977. The next prime is 635434342043. The reversal of 635434341979 is 979143434536.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 635434341979 - 2¹ = 635434341977 is a prime.

Together with 635434341977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (635434341977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317717170989 + 317717170990.

It is an arithmetic number, because the mean of its divisors is an integer number (317717170990).

Almost surely, 2^635434341979 is an apocalyptic number.

635434341979 is a deficient number, since it is larger than the sum of its proper divisors (1).

635434341979 is an equidigital number, since it uses as much as digits as its factorization.

635434341979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 58.

The spelling of 635434341979 in words is "six hundred thirty-five billion, four hundred thirty-four million, three hundred forty-one thousand, nine hundred seventy-nine".