635823942487 has 2 divisors, whose sum is σ = 635823942488. Its totient is φ = 635823942486.

The previous prime is 635823942461. The next prime is 635823942493. The reversal of 635823942487 is 784249328536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 635823942487 - 2¹⁹ = 635823418199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635823946487) 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, 317911971243 + 317911971244.

It is an arithmetic number, because the mean of its divisors is an integer number (317911971244).

Almost surely, 2^635823942487 is an apocalyptic number.

635823942487 is a deficient number, since it is larger than the sum of its proper divisors (1).

635823942487 is an equidigital number, since it uses as much as digits as its factorization.

635823942487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 61.

The spelling of 635823942487 in words is "six hundred thirty-five billion, eight hundred twenty-three million, nine hundred forty-two thousand, four hundred eighty-seven".