42943634993 has 8 divisors (see below), whose sum is σ = 49088128512. Its totient is φ = 36801563616.

The previous prime is 42943634989. The next prime is 42943635011. The reversal of 42943634993 is 39943634924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42943634993 - 2² = 42943634989 is a prime.

It is a super-2 number, since 2×42943634993² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42943634933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567380 + ... + 638597.

It is an arithmetic number, because the mean of its divisors is an integer number (6136016064).

Almost surely, 2^42943634993 is an apocalyptic number.

It is an amenable number.

42943634993 is a deficient number, since it is larger than the sum of its proper divisors (6144493519).

42943634993 is a wasteful number, since it uses less digits than its factorization.

42943634993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211071.

The product of its digits is 15116544, while the sum is 56.

The spelling of 42943634993 in words is "forty-two billion, nine hundred forty-three million, six hundred thirty-four thousand, nine hundred ninety-three".