66495610550 has 12 divisors (see below), whose sum is σ = 123681835716. Its totient is φ = 26598244200.

The previous prime is 66495610541. The next prime is 66495610579. The reversal of 66495610550 is 5501659466.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66495610495 and 66495610504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664956056 + ... + 664956155.

It is an arithmetic number, because the mean of its divisors is an integer number (10306819643).

Almost surely, 2^66495610550 is an apocalyptic number.

66495610550 is a deficient number, since it is larger than the sum of its proper divisors (57186225166).

66495610550 is a wasteful number, since it uses less digits than its factorization.

66495610550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329912223 (or 1329912218 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 66495610550 in words is "sixty-six billion, four hundred ninety-five million, six hundred ten thousand, five hundred fifty".