66811110800 has 60 divisors (see below), whose sum is σ = 183444229056. Its totient is φ = 22906665600.

The previous prime is 66811110799. The next prime is 66811110827. The reversal of 66811110800 is 801111866.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11927756 + ... + 11933355.

Almost surely, 2^66811110800 is an apocalyptic number.

It is an amenable number.

66811110800 is an abundant number, since it is smaller than the sum of its proper divisors (116633118256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66811110800 is a wasteful number, since it uses less digits than its factorization.

66811110800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23861136 (or 23861125 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 66811110800 in words is "sixty-six billion, eight hundred eleven million, one hundred ten thousand, eight hundred".