634342787243435 has 64 divisors (see below), whose sum is σ = 816815944433664. Its totient is φ = 471251499264000.

The previous prime is 634342787243419. The next prime is 634342787243467. The reversal of 634342787243435 is 534342787243436.

It is a happy number.

It is not a de Polignac number, because 634342787243435 - 2⁴ = 634342787243419 is a prime.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 2963239214 + ... + 2963453276.

It is an arithmetic number, because the mean of its divisors is an integer number (12762749131776).

Almost surely, 2^{634342787243435} is an apocalyptic number.

634342787243435 is a deficient number, since it is larger than the sum of its proper divisors (182473157190229).

634342787243435 is a wasteful number, since it uses less digits than its factorization.

634342787243435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215724.

The product of its digits is 975421440, while the sum is 65.

Subtracting from 634342787243435 its reverse (534342787243436), we obtain a palindrome (99999999999999).

The spelling of 634342787243435 in words is "six hundred thirty-four trillion, three hundred forty-two billion, seven hundred eighty-seven million, two hundred forty-three thousand, four hundred thirty-five".