66084311800 has 96 divisors (see below), whose sum is σ = 166110462000. Its totient is φ = 24305172480.

The previous prime is 66084311729. The next prime is 66084311869. The reversal of 66084311800 is 811348066.

It is a self number, because there is not a number n which added to its sum of digits gives 66084311800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618751 + ... + 717649.

Almost surely, 2^66084311800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66084311800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83055231000).

66084311800 is an abundant number, since it is smaller than the sum of its proper divisors (100026150200).

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

66084311800 is a wasteful number, since it uses less digits than its factorization.

66084311800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99185 (or 99176 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

Adding to 66084311800 its reverse (811348066), we get a palindrome (66895659866).

The spelling of 66084311800 in words is "sixty-six billion, eighty-four million, three hundred eleven thousand, eight hundred".