6242643681 has 8 divisors (see below), whose sum is σ = 8459976384. Its totient is φ = 4093536720.

The previous prime is 6242643677. The next prime is 6242643713. The reversal of 6242643681 is 1863462426.

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

It is not a de Polignac number, because 6242643681 - 2² = 6242643677 is a prime.

It is a super-2 number, since 2×6242643681² = 77941200255858459522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6242643181) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 17056221 + ... + 17056586.

It is an arithmetic number, because the mean of its divisors is an integer number (1057497048).

Almost surely, 2^6242643681 is an apocalyptic number.

6242643681 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6242643681 is a deficient number, since it is larger than the sum of its proper divisors (2217332703).

6242643681 is a wasteful number, since it uses less digits than its factorization.

6242643681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34112871.

The product of its digits is 331776, while the sum is 42.

The square root of 6242643681 is about 79010.4023594362. The cubic root of 6242643681 is about 1841.2927746386.

The spelling of 6242643681 in words is "six billion, two hundred forty-two million, six hundred forty-three thousand, six hundred eighty-one".