667881112856 has 32 divisors (see below), whose sum is σ = 1291012763040. Its totient is φ = 323679679488.

The previous prime is 667881112853. The next prime is 667881112933. The reversal of 667881112856 is 658211188766.

It is a junction number, because it is equal to n+sod(n) for n = 667881112795 and 667881112804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667881112853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211801 + ... + 4367496.

It is an arithmetic number, because the mean of its divisors is an integer number (40344148845).

Almost surely, 2^667881112856 is an apocalyptic number.

It is an amenable number.

667881112856 is a deficient number, since it is larger than the sum of its proper divisors (623131650184).

667881112856 is a wasteful number, since it uses less digits than its factorization.

667881112856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579603 (or 8579599 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 59.

The spelling of 667881112856 in words is "six hundred sixty-seven billion, eight hundred eighty-one million, one hundred twelve thousand, eight hundred fifty-six".