634344026662641 has 4 divisors (see below), whose sum is σ = 845792035550192. Its totient is φ = 422896017775092.

The previous prime is 634344026662487. The next prime is 634344026662651. The reversal of 634344026662641 is 146266620443436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 634344026662641 - 2²³ = 634344018274033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634344026662651) 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 in 3 ways as a sum of consecutive naturals, for example, 105724004443771 + ... + 105724004443776.

It is an arithmetic number, because the mean of its divisors is an integer number (211448008887548).

Almost surely, 2^{634344026662641} is an apocalyptic number.

It is an amenable number.

634344026662641 is a deficient number, since it is larger than the sum of its proper divisors (211448008887551).

634344026662641 is a wasteful number, since it uses less digits than its factorization.

634344026662641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211448008887550.

The product of its (nonzero) digits is 71663616, while the sum is 57.

The spelling of 634344026662641 in words is "six hundred thirty-four trillion, three hundred forty-four billion, twenty-six million, six hundred sixty-two thousand, six hundred forty-one".