42643634624 has 14 divisors (see below), whose sum is σ = 84620962584. Its totient is φ = 21321817280.

The previous prime is 42643634573. The next prime is 42643634639.

42643634624 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333153332 + ... + 333153459.

Almost surely, 2^42643634624 is an apocalyptic number.

It is an amenable number.

42643634624 is a deficient number, since it is larger than the sum of its proper divisors (41977327960).

42643634624 is an equidigital number, since it uses as much as digits as its factorization.

42643634624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666306803 (or 666306793 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 44.

The spelling of 42643634624 in words is "forty-two billion, six hundred forty-three million, six hundred thirty-four thousand, six hundred twenty-four".