42608268681 has 16 divisors (see below), whose sum is σ = 62048360640. Its totient is φ = 25792902720.

The previous prime is 42608268679. The next prime is 42608268709. The reversal of 42608268681 is 18686280624.

It is not a de Polignac number, because 42608268681 - 2¹ = 42608268679 is a prime.

It is a super-2 number, since 2×42608268681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42608268281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728686 + ... + 784983.

It is an arithmetic number, because the mean of its divisors is an integer number (3878022540).

Almost surely, 2^42608268681 is an apocalyptic number.

It is an amenable number.

42608268681 is a deficient number, since it is larger than the sum of its proper divisors (19440091959).

42608268681 is a wasteful number, since it uses less digits than its factorization.

42608268681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514536.

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 42608268681 in words is "forty-two billion, six hundred eight million, two hundred sixty-eight thousand, six hundred eighty-one".