66873414800 has 30 divisors (see below), whose sum is σ = 160663380018. Its totient is φ = 26749365760.

The previous prime is 66873414791. The next prime is 66873414833. The reversal of 66873414800 is 841437866.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18656281744 + 48217133056 = 136588^2 + 219584^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 83591369 + ... + 83592168.

Almost surely, 2^66873414800 is an apocalyptic number.

It is an amenable number.

66873414800 is an abundant number, since it is smaller than the sum of its proper divisors (93789965218).

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

66873414800 is a wasteful number, since it uses less digits than its factorization.

66873414800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167183555 (or 167183544 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 66873414800 in words is "sixty-six billion, eight hundred seventy-three million, four hundred fourteen thousand, eight hundred".