56668889998 has 16 divisors (see below), whose sum is σ = 97152300000. Its totient is φ = 24285259296.

The previous prime is 56668889993. The next prime is 56668890079. The reversal of 56668889998 is 89998886665.

It is a happy number.

It is a super-2 number, since 2×56668889998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56668889993) 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 7 ways as a sum of consecutive naturals, for example, 154540 + ... + 370432.

It is an arithmetic number, because the mean of its divisors is an integer number (6072018750).

Almost surely, 2^56668889998 is an apocalyptic number.

56668889998 is a deficient number, since it is larger than the sum of its proper divisors (40483410002).

56668889998 is a wasteful number, since it uses less digits than its factorization.

56668889998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234651.

The product of its digits is 3224862720, while the sum is 82.

The spelling of 56668889998 in words is "fifty-six billion, six hundred sixty-eight million, eight hundred eighty-nine thousand, nine hundred ninety-eight".