634136485444087 has 2 divisors, whose sum is σ = 634136485444088. Its totient is φ = 634136485444086.

The previous prime is 634136485444043. The next prime is 634136485444153. The reversal of 634136485444087 is 780444584631436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634136485444087 - 2⁷ = 634136485443959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634136485444487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317068242722043 + 317068242722044.

It is an arithmetic number, because the mean of its divisors is an integer number (317068242722044).

Almost surely, 2^{634136485444087} is an apocalyptic number.

634136485444087 is a deficient number, since it is larger than the sum of its proper divisors (1).

634136485444087 is an equidigital number, since it uses as much as digits as its factorization.

634136485444087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 743178240, while the sum is 67.

The spelling of 634136485444087 in words is "six hundred thirty-four trillion, one hundred thirty-six billion, four hundred eighty-five million, four hundred forty-four thousand, eighty-seven".