66055666350 has 24 divisors (see below), whose sum is σ = 163818052920. Its totient is φ = 17614844320.

The previous prime is 66055666349. The next prime is 66055666363. The reversal of 66055666350 is 5366655066.

It is a self number, because there is not a number n which added to its sum of digits gives 66055666350.

It is a congruent number.

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, 220185405 + ... + 220185704.

It is an arithmetic number, because the mean of its divisors is an integer number (6825752205).

Almost surely, 2^66055666350 is an apocalyptic number.

66055666350 is an abundant number, since it is smaller than the sum of its proper divisors (97762386570).

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

66055666350 is a wasteful number, since it uses less digits than its factorization.

66055666350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440371124 (or 440371119 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 48.

The spelling of 66055666350 in words is "sixty-six billion, fifty-five million, six hundred sixty-six thousand, three hundred fifty".