66693598448 has 20 divisors (see below), whose sum is σ = 136019839560. Its totient is φ = 31591704384.

The previous prime is 66693598427. The next prime is 66693598457. The reversal of 66693598448 is 84489539666.

It is a happy number.

It is a super-3 number, since 3×66693598448³ (a number of 33 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109693115 + ... + 109693722.

It is an arithmetic number, because the mean of its divisors is an integer number (6800991978).

Almost surely, 2^66693598448 is an apocalyptic number.

It is an amenable number.

66693598448 is an abundant number, since it is smaller than the sum of its proper divisors (69326241112).

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

66693598448 is a wasteful number, since it uses less digits than its factorization.

66693598448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219386864 (or 219386858 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 68.

The spelling of 66693598448 in words is "sixty-six billion, six hundred ninety-three million, five hundred ninety-eight thousand, four hundred forty-eight".