66011946600 has 48 divisors (see below), whose sum is σ = 204637036320. Its totient is φ = 17603185600.

The previous prime is 66011946541. The next prime is 66011946683. The reversal of 66011946600 is 664911066.

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, 55009356 + ... + 55010555.

It is an arithmetic number, because the mean of its divisors is an integer number (4263271590).

Almost surely, 2^66011946600 is an apocalyptic number.

66011946600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66011946600 is an abundant number, since it is smaller than the sum of its proper divisors (138625089720).

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

66011946600 is a wasteful number, since it uses less digits than its factorization.

66011946600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110019930 (or 110019921 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 66011946600 in words is "sixty-six billion, eleven million, nine hundred forty-six thousand, six hundred".